A Colleague Has Suggested That You Down-Edit Your E-Mail Message

Multiple Choice

A colleague has suggested that you down-edit your e-mail message when replying to be more efficient. What should you do? 

A) Insert your responses to parts of the incoming message, and include only those parts of the incoming message to which you are responding.
B) Place your reply at the bottom, after the original message.
C) Delete the original message altogether before adding your reply.
D) Write your reply using all lowercase letters.