The number of books in a library increased by 30\% from 2002 to 2014. There were x books in the library in 2002. Which expression represents the number of books in the library in 2014 in terms of x? 
选项为:A:$130x$  B:$30x$  C:$1.3x$  D:$0.3x$  请回答其中一个选项.