TOEFL Listening: ETS-TOEFL听力机经 - X306OPV44I4NFRM7P$

What does the professor imply when she talks about the payments that peasants made to noble landlords? A. Landlords expected peasants to pay for and food the peasants consumed B. Food was valuable to nobles as a type of payment C. Peasants often had to borrow money to fulfill their obligations to their landlords D. The payments were one reason that paper money became more common as a means of exchange