Vance Fancies Himself the Ultimate Weatherman

Vance fancies himself the ultimate weatherman."I can make it rainy or sunny any time I want to," he claims.When his therapist asks him to make it rain,he says he will when he feels like it.Later that day,it begins to rain and Vance calls his therapist and tells him,"I told you so!" What psychotic symptom is Vance evidencing?

A) Delusions of grandeur
B) Delusions of control
C) Delusions of persecution
D) Delusions of invincibility