If a Patient Whose Account Is in Collection Calls the Office

If a patient whose account is in collection calls the office and states that he is sending a check for a portion of the outstanding amount, what should the medical assistant tell him?

A) To address the envelope to her attention
B) To send the check to the collection agency
C) To write account in collection on the memo line of the check
D) To send 60% of the amount to the office and the other 40% to the collection agency