When Asking for Information and Action,explaining Why You're Making the Request

When asking for information and action,explaining why you're making the request

A) is unnecessary since the audience is likely to comply.
B) is part of an effective strategy for getting what you want.
C) suggests that you think the audience is unintelligent.
D) causes your request to be wordy and hard to understand.
E) generally reduces the likelihood of receiving a positive response.