A study of food resources in the North Pacific between 1989and 1986 revealed (that creatures of the seabed were suffering from dwindling food sufflies, possibly resulting from increasing) sea surface temperatures during the same period.
A. that creatures of the seabed were suffering from dwindling food sufflies, possibly resulting from increasing B. that creatures of the seabed were suffering because food supplies were dwindling, possibly as a result of an increase in D. that creatures of the seabed were suffering because of food supplies, which were dwindling possibly as a result of increasing 答案:B。为什么A和D不可以呢?望不吝赐教。。。