John's Counselor Says His Sexual Activity Would Generally Be Considered

John's counselor says his sexual activity would generally be considered to be a paraphilia because it meets all of the following conditions except ________.

A) the behavior is engaged in for the purpose of sexual arousal or gratification
B) the behavior tends to be compulsive and recurrent
C) a clear majority of those in a given cultural setting would consider the behavior to be strange, deviant, pathological or abnormal
D) the behavior involves another person