请教大全-B-8

8. Current farm policy is institutionalized penalization of consumers. It increases food prices for middle- and low-income families and costs the taxpayer billions of dollars a year.
Which of the following statements, if true, would provide support for the author’s claims above?
I. Farm subsidies amount to roughly $20 billion a year in federal payouts and $12 billion more in higher food prices.
II. According to a study by the Department of Agriculture, each $1 of benefits provided to farmers for ethanol production costs consumers and taxpayers $4.
III. The average full-time farmers have an average net worth of over $300,000.
(A) I only
(B) II only
(C) III only
(D) I and II only
(E) I, II, and III
答案D 。 II 虽提到taxpayers交得多，提但是没有能说明一定costs the taxpayer billions of dollars a year.呀？这个为什么也对呢？