In 1988, Trent Reluctantly Started Psychotherapy While in Prison for Sexually

In 1988, Trent reluctantly started psychotherapy while in prison for sexually assaulting three young boys. Trent's therapist soon diagnosed Trent with multiple personality disorder and Trent began to claim that another personality he called 'Mike' was a pedophile who he was unable to control. Trent began to switch between his own personality and that of his alter ego frequently in prison, insisting that the other inmates refer to him by different names at different times. Which theory BEST explains Trent's display of multiple personalities?

A) Trent has multiple personalities because he experienced sexual abuse as a child.
B) Trent developed a second personality so that committing sexual assaults on children would be less distressful.
C) Trent accepted the diagnosis of MPD because it was a socially acceptable way to explain his socially unacceptable behaviour.
D) Trent accepted the diagnosis of MPD in order to please his therapist.