Astrology Is Having a Resurgence Not Only Because of Mystical

Astrology is having a resurgence not only because of mystical trends that ebb and flow over the years, but also because of the superabundance of astrological material easily accessible everywhere. (J.V. Stewart, Astrology: What's Really in the Stars?)
This statement is made up of a(n) _____ and a(n) _____.

A) argument; conclusion: There is a superabundance of astrological material everywhere
B) nonargument; explanation
C) argument; conclusion: Astrology is having a resurgence
D) nonargument; report