PREP104一个困扰很久的修饰问题

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

答案 C，想问为什么C中depending没有做定语修饰TREE，又能做状语修饰后面从句谓语的歧义？谢谢回答！

首先depending没有做定于 ing做后置定语是要跟在名词后面的是没有逗号的 the girl sitting there坐在那的女孩儿

其次 如果做定语的话就改变了逻辑意思 a single tree depending on its size and on climate and altitude

言下之意你把tree分成两种了 一种是要受its size and on climate and altitude的tree

一种是a single tree not depending on ...

换言之，你给本来的tree加了限定词 就改变了句子的主语 主语包括名词本身还有它的限定词 例如a girl与a girl sitting there完全不一样 

Thus会改变原句意思 这是不对的

最后 C中没有做定语 没有歧义

谢谢~解释很清楚