As Part of Her Work with a Sex Therapist, a Woman

As part of her work with a sex therapist, a woman has been doing homework that involves inserting a narrow vaginal dilator into her vagina. This is likely

A) a sensate focus exercise.
B) part of her treatment for anorgasmia.
C) part of her treatment for vaginismus.
D) part of her treatment for dyspareunia.
E) part of her treatment for persistent genital arousal disorder.