How many sinus cavity(ies) are there?

The first thing you should do when answering the telephone is ____.  

A.  schedule an appointment for the caller B.  put the caller on hold C.  identify the medical office and yourself D.  notify the physician that a patient is calling E.  ask the caller why he is calling

If you receive another call while talking to a patient, the procedure to follow is to 

A. put the first caller on hold. B. ask another person in the office to help out by taking either call. C. get the second caller's name, address, and phone number before putting that call on hold. D. tell the second caller to call back when the office is not so busy.