Sentence Correction

Of all the major developments in information technology that have influenced literary production, maybe none is more influential as the printing press, which brought the entire classical canon to people throughout Europe within 60 years of its invention.

A maybe none is more influential as
B it may be that none is more influential as
C perhaps it is none that is more influential than
D maybe it is none that was more influential than
E perhaps none was more influential than

I dont understand the logic behind selecting was vs is, if it would have been "Of all the major developments in information technology that had influenced" then there was no doubt in selecting was

oa E