TT-2-30 Why A is wrong

Q30:

Most insomnia is not an illness or a physical condition so much as a symptom of another problem that may simply be a reaction to certain medications, anxiety about travel, or stress before a job interview.

A.    an illness or a physical condition so much as a symptom of another problem that may simply be a reaction to certain medications

B.     an illness or a physical condition so much as symptomatic of another problem that may be a simple one, like a reaction caused by certain medications

C.     so much an illness or a physical condition but a symptom of another problem that may be as simple as when certain medications cause a reaction

D.    so much an illness or a physical condition, but it is a symptom of another problem, maybe a simple one like certain medications causing a reaction

E.     so much an illness or a physical condition but symptomatic of another problem, maybe simply a reaction to certain medications

   Answer: E

Why a is wrong

an illness or a physical condition so much as a symptom

意思不对啊,原句是想表达不是而是的观点,so much as是甚至于,连...都不的意思