请教一道语法题PP-10

Q29: PP-10

The yield per acre of coffee berries varies enormously in that a single tree, depending on both its size and on climate and altitude, could produce enough berries to make between one and twelve pounds of dried beans a year.

A.      enormously in that a single tree, depending on both its size and on climate and altitude, could produce

B.       enormously in that a single tree, dependent on its size and also on climate and altitude, is able to produce

C.      enormously, because a single tree, depending on its size and on climate and altitude, is able to produce

D.      enormously, because a single tree, being dependent on its size, climate, and altitude, is capable of producing

E.       enormously, because a single tree, dependent both on its size as well as on climate and altitude, could produce

C

请问B错在哪里？

BECAUSE 优于IN THAT

勉强可以认为是and also有问题；

Gmat可能比较prefer分词(OG和pre中只有aware of和excited about两处‘形容词无动词分句’，都是修饰主语的)；

because和in that在没有其他错误的时候because能稍稍好些；

我选了A,也注意到了时态是过去式，可能不对，但记得是can 优于be able to 的，所以还是选了A.

哪位给说说，A和C的差别！

thanks!

可为什么XDF老是总结的时候说的是in that>because呢？于是我当机立断选了B。

我认为可能插入语dependent或者depending的形式有关