The selling price of a sofa set is ＄$$5500$$ and the profit percentage is $$10\textbackslash\%$$ for each set sold. If the cost of the sofa set is not changed, what is the new profit percentage if raising the profit to ＄$$1800$$? 
选项为:A:$$24\textbackslash\%$$  B:$$25\textbackslash\%$$  C:$$30\textbackslash\%$$  D:$36\textbackslash\%$  请回答其中一个选项.