For Women Who Would Like to Experience Orgasm with a Partner

For women who would like to experience orgasm with a partner, vibrators are:

A) strongly recommended to make up for the fact that a partner is only rarely able to bring a woman to orgasm without some type of assistance.
B) sometimes useful so a woman knows she can have this response, but then manual stimulation is recommended because this can be replicated by a partner.
C) not recommended because the response they produce is not a real orgasm.
D) never recommended because they can cause nerve damage in the genital area.