Jack bought a batch of goods that he hoped to earn a $$50\textbackslash\%$$ profit after selling them. On the first day, he sold $$60\textbackslash\%$$ of his goods at a profit of $$50\textbackslash\%$$. On the second day, he sold all remaining goods for a discount. If the total profit is $$76\textbackslash\%$$ of the planned profit, what was the discount rate? 
选项为:A:$$20\textbackslash\%$$  B:$$21\textbackslash\%$$  C:$$22\textbackslash\%$$  D:$$24\textbackslash\%$$  请回答其中一个选项.