Rowena Must Read and Reply to Several E-Mail Messages

Multiple Choice

Rowena must read and reply to several e-mail messages. What is the best tip she can follow to make sure that she handles her e-mail professionally? 

A) If she can't reply to a message within 24 hours, just delete the message.
B) Change the subject line if the subject changes.
C) Read and reply to each e-mail message in her inbox before moving on to the next message.
D) Print every e-mail message she receives to make sure she has proper documentation.