MacMan, Inc. reported the following data: 2019 2018 Amount Percentage Revenues $6,370 $4,980 $1,390 27.91% Cost of goods sold 3,370 2,500 870 34.80% Gross profit 3,000 2,480 520 20.97% Operating expenses: Sales and marketing expense 730 630 100 15.87% General and administrative expenses 420 440 (20) (4.55)% Research and development expense 470 410 60 14.63% Other expense 430 730 (300) (41.10)% Total operating expenses 2,050 2,210 (160) (7.24)% Income before income tax 950 270 680 251.85% Income tax expense 260 250 $10 4% Net income (loss) $690 $20 $670 3,350% The horizontal analysis shows that cost of goods sold has ________. (Round your answer to two decimal places.) A. increased by 27.91% B. decreased by 27.91% C. decreased by 34.80% D. increased by 34.80%