prep1-122再问指代问题

122. (30951-!-item-!-188;#058&004354)

Surveys have shown that in up to 40 percent of elderly people living independently in affluent

countries, the consumption of one or more essential nutrients is insufficient or they have deficient

levels of these nutrients in their blood.

(A) in up to 40 percent of elderly people living independently in affluent countries, the consumption

of one or more essential nutrients is insufficient or they have

(B) in up to 40 percent of elderly people who live independently in affluent countries, they consume

one or more essential nutrients insufficiently or have

(C) in up to 40 percent of elderly people who live independently in affluent countries, one or more

essential nutrients are consumed insufficiently or having

(D) up to 40 percent of elderly people living independently in affluent countries who consume

insufficient amounts of one or more essential nutrients or who have

(E) up to 40 percent of elderly people who live independently in affluent countries consume

insufficient amounts of one or more essential nutrients or have答案E

只看B好了，they指代有没有问题？究竟指elderly people,40 percent of elderly people,还是affluent countries困惑已久的问题了，谢谢

根据后面的their判断应该指的是人

请问AB有什么错

我觉得they指people没有问题啊