Company X sells widgets. The following information summarizes the company's operating activities for the year: Beginning inventory Sales revenue Sales commissions Rent for office Utilities for the office Purchases Ending inventory $7,800 $25,000 $1,000 S2,700 S1,900 $6,800 S5,300 What is gross profit? OA. $20,300 O B. S10,100 O C. $15,700 O D. $13,800