求助一道填空题

　For decades, economic ideas have been (i)______ political purpose. Economists, for example,have peddled their theories as a way of gaining public prominence or political appointment, while politicians have (ii)______ economic doctrines as possible solutions to the nations social problems.
　　Blank (I)Blank (II)
　　A：undermined by D：rejected
　　B：inspired by E：ignored
　　C：exploited for F：promoted
这道题网上查出来是BF,但是老师发的讲义上是CF。求问各位大佬，正确答案应该是哪个啊？