A company completed the following transactions during the month of October: 1. Purchased office supplies on account, $5,600. II. Provided services for cash, $20,000. III. Provided services on account, $37,000. IV. Collected cash from a customer on account, $27,000. V. Paid the monthly rent of $4,000. What was the company's total revenue for the month? O A. $84,000 O B. $37,000 O c. $20,000 OD. $57,000