Who Among the Following Is Most Likely Suffering from a Frotteuristic

Who among the following is most likely suffering from a frotteuristic disorder?

A) Ramesh,who likes to rub his genitals against random women in a crowded bus against their will
B) Sophie,who likes to beat up her partner and inflict pain on him before engaging in a sexual act
C) Ade,who frequently engages in sexual activities with a prepubescent boy in his home
D) Spencer,who likes to be beaten with leather belts while engaging in a sexual act