Five years ago, Jennifer\textquotesingle s age was five times Jason\textquotesingle s age. Now, Jennifer\textquotesingle s age is four times Jason\textquotesingle s age. How old is Jennifer now? 
选项为:A:$$20$$  B:$$60$$  C:$$80$$  D:$$100$$  E:None of the above  请回答其中一个选项.