There are roughly three million people who live in Wales. Nearly six hundred thousand of them speak Welsh. Approximately what percentage of people living in Wales speak Welsh? 
选项为:A:$$10\textbackslash\%$$  B:$$20\textbackslash\%$$  C:$$30\textbackslash\%$$  D:$$40\textbackslash\%$$  E:$$50\textbackslash\%$$  请回答其中一个选项.