Messages Sent Via IM,text Messaging,email and Blogging

Multiple Choice

Messages sent via IM,text messaging,email and blogging

A) do not require revision, even when used for business purposes.
B) should be revised, even if it involves nothing more than a quick review before sending.
C) do not need to be revised unless a potential sale is involved.
D) cannot be revised.
E) don't need to be revised, since software editing features will eliminate any errors.