A Medical Assistant Is Discussing a Billing Dispute with a Patient

A medical assistant is discussing a billing dispute with a patient. The patient states, "My bill does not show your office took the appropriate insurance adjustment." The medical assistant posted the insurance payment, but did not take the necessary write-off. Which of the following responses is most appropriate for the medical assistant?

A) "That was a computer error."
B) "I will notify the office manager that the error was made and a corrected statement will be sent."
C) "I will notify the physician who posted this payment and have him call you."
D) "I am sorry. I will make the adjustment and send you a corrected statement."