What Modifier Would Be Most Appropriate in the Following Scenario

Multiple Choice

What modifier would be most appropriate in the following scenario? Physician performs a tubal ligation on a patient ,and 3 weeks later the patient returns to the office. She now has an infected Bartholin's gland cyst. The following week the same physician performs a Bartholin's gland marsupialization.

A) No modifier needed since they are on different dates of service
B) -79
C) -51
D) 58