以下は、cシャープでコマンドライン引数として株式ティッカーシンボルを指定できるようにしたプログラムの修正版である：

```
using System;
using yfinance;

namespace StockOptions
{
    class Program
    {
        static void Main(string[] args)
        {
            if (args.Length != 1)
            {
                Console.WriteLine("Usage: StockOptions [TICKER SYMBOL]");
                return;
            }

            var ticker = args[0];
            var stock = Stock.Get(ticker);
            var options = stock.Options;

            Console.WriteLine("Options for stock with ticker symbol " + ticker + ":");
            Console.WriteLine("------------------------------------------------");

            foreach (var option in options)
            {
                Console.WriteLine("Option symbol: " + option.Symbol);
                Console.WriteLine("Expiration date: " + option.Expiration);
                Console.WriteLine("Strike price: " + option.Strike);
                Console.WriteLine("Option type: " + option.Type);
                Console.WriteLine("Last price: " + option.LastPrice);
                Console.WriteLine("------------------------------------------------");
            }

            Console.ReadLine();
        }
    }
}
```

以下のように、コマンドラインの引数に株式ティッカーシンボルを指定すれば、プログラムを実行できる：ストックオプション 'MSFT'
Here's a modified version of the program that allows you to specify the stock ticker symbol as a command line argument in c sharp: 

using System;
using yfinance;

namespace StockOptions
{
    class Program
    {
        static void Main(string[] args)
        {
            if (args.Length != 1)
            {
                Console.WriteLine("Usage: StockOptions [TICKER SYMBOL]");
                return;
            }

            var ticker = args[0];
            var stock = Stock.Get(ticker);
            var options = stock.Options;

            Console.WriteLine("Options for stock with ticker symbol " + ticker + ":");
            Console.WriteLine("------------------------------------------------");

            foreach (var option in options)
            {
                Console.WriteLine("Option symbol: " + option.Symbol);
                Console.WriteLine("Expiration date: " + option.Expiration);
                Console.WriteLine("Strike price: " + option.Strike);
                Console.WriteLine("Option type: " + option.Type);
                Console.WriteLine("Last price: " + option.LastPrice);
                Console.WriteLine("------------------------------------------------");
            }

            Console.ReadLine();
        }
    }
}

You can run the program by specifying the stock ticker symbol as a command line argument, like this: StockOptions 'MSFT'