GMAT Sentence Correction (SC) | Re: Most insomnia is not an illness or a physical condition so

Most insomnia is notan 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