GMAT Sentence Correction (SC) | OG2017:Making things even more difficult

Makingthingsevenmoredifficulthasbeengeneralmarketinactivitylately,ifnotparalysis,whichhasprovided littlein thewayofpricing guidance.

A) hasbeengeneralmarketinactivitylately,ifnotparalysis,whichhasprovided
B) thereisgeneralmarketinactivity,ifnotparalysis,latelyithasprovided
C) generalmarketinactivity,ifnotparalysis,haslatelyprovided
D) lately,generalmarketinactivity,ifnotparalysis,hasprovided
E) isthatlatelygeneralmarketinactivity,ifnotparalysis,which
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