A physician performs medical services for a patient on October 20; the total bill for the medical services was $200. The patient makes a co-pay of $20 on October 20, and the insurance company pays the remaining balance of $180 on November 19. On what date(s) will the physician record the revenue for those medical services provided on October 20? (Assume the accrual basis of accounting is used.) O A. $180 of revenue on October 20 and the remaining $20 on November 19 OB. $200 of revenue on November 19 OC. $20 of revenue on October 20 and $180 of revenue on November 19 OD. $200 of revenue on October 20