A salt solution is made by mixing $$8$$ ounces of pure salt and $$32$$ ounces of water. Find the percent concentration of the solution. 
选项为:A:$$10\textbackslash\%$$  B:$$15\textbackslash\%$$  C:$$20\textbackslash\%$$  D:$$25\textbackslash\%$$  请回答其中一个选项.