After Sally takes 20 shots, she has made $75 \textbackslash\%$ of her shots. After she takes 10 more shots, she drops her percentage to $60 \textbackslash\%$. How many of the last 5 shots did she make? (adapted from 2004 AMC 8, Question\#6) 
选项为:A:$$2$$  B:$$3$$  C:$$4$$  D:$$5$$  E:$$6$$  请回答其中一个选项.