请教一道做第二遍还是错的题

Federal agricultural programs aimed at benefiting one group whose livelihood depends on farming often end up harming another such group

Which of the following statements provides support for the claim above?

1. An effort to help feed-grain producers resulted in higher prices for their crops, but the higher prices decreased the profits of livestock producers.

2. In order to recuce crop surpluses and increase prices, growers of certain crops were paid to leave a portion of their land idle, but the reduction was not achieved because improvements in efficiency resulted in higher production on the land in use.

3. Many farm workers were put out of work when a program meant to raise the price of grain provided grain growers with an incentive to reduce production by giving them surplus grain from government reserves.

a.1, but not 2 and not 3

b.2,but not 1 and not 3

c.1and3, but not 2

d.2and3, but not 1

e. 1,2 and 3

我对原文的理解是：联邦的农业计划，其目的在帮助one group，往往也有益于 another such group.

怎么理解这句话呢： end up harming another such group.

correct answer: b

意思是“以伤害另一个群体告终”