abidshariff wrote: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
could produce is not required, be in the present tense, also could shows possibility, here we are talking of ability.
B enormously in that a single tree, dependent on its size and also on climate and altitude, is able to produce

dependant is the wrong word, its correct to say I am dependant on my dad. But incorrect to say- Dependant on how much money I have I will either go clubbing or pubbing.
Correct - Depending on how much money I have I will either go clubbing or pubbing.

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 on its size as well as on climate and altitude, could produce
prefer and over as well as (not a make or break rule), plus the use of as well as is completely messed here, its generally used in a long phrase joining more than 2 elements.

ing form does not necessarily modify the entire clause.
look at this sentence :

My son has plenty of stuff, including a napkin and a handgun.