Which Is a Guideline That Project Managers Should Follow When

 Which is a guideline that project managers should follow when communicating with teams through e-mail?

A) Always reply to all the people to whom the initial message was sent.
B) If the entire message can fit in the subject line, put it there.
C) Minimize the total number of e-mails by including as many subjects as possible in a single e-mail.
D) Continue replying to e-mail messages without changing the subject line to maintain continuity.