What Is the Purpose of Taking Messages for the Physician

What is the purpose of taking messages for the physician even if he or she is in the office?

A) To allow the physician to avoid constant interruptions while he or she is seeing patients
B) To be sure that patient's understand how important the physician's time is
C) To encourage patients to make appointments if they have questions for the physician
D) To save the expense of having one person assigned to answering incoming calls
E) All of the above