point(s) possible Submit quiz If a dealer buys a car from the manufacturer for $15,755 and then sells it for $19,158, his markup is 21.6%. In doing this problem, Angela calculated make? 19,158-15,755 19,158 got an incorrect answer of 17.8%. What mistake did she Select the correct choice below. OA. Angela used the gross increase and not the net increase. OB. Angela used the prices measured in thousands of dollars instead of dollars. OC. Angela calculated how much lower the manufacturer's price was compared to the dealer's price. OD. Angela calculated how much she could save on a new car.