Surveys have shown that in up to 40 percentof elderly people living independently in affluent countries, the consumptionof one or more essential nutrients is insufficient or they have deficientlevels of these nutrients in their blood.
(A) in up to 40 percent of elderly peopleliving independently in affluent countries, the consumption of one or moreessential nutrients is insufficient or they have
(B) in up to 40 percent of elderly people wholive independently in affluent countries, they consume one or more essential nutrients insufficientlyor have
(C) in up to 40 percent of elderly people wholive independently in affluent countries, one or more essential nutrients areconsumed insufficiently or having
(D) up to 40 percent of elderly people livingindependently in affluent countries who consume insufficient amounts of one ormore essential nutrients or who have
(E) up to 40 percent of elderly people who live independently inaffluent countries consume insufficient amounts of one or more essentialnutrients or have
1.(A)they的错误指代，是指代到nutrients而正确是指40 percent of elderly people吗?
2.(B)they的指代不清是40 percent of elderly people和elderly people吗?
3.(A),(B)前方有主词动词后方也有，是不是需要连接词呢？
请帮忙解答，感谢！
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