Of the Various Hypothesized Influences of Paraphilia, the Ones That

Of the various hypothesized influences of paraphilia, the ones that we know the least about involve

A) biological influences such as genetics and neurotransmitters.
B) reinforced but inappropriate masturbatory fantasies.
C) social influences such as inadequate development of social skills.
D) paradoxical effects of repeated attempts to suppress unwanted arousal.