For the period from 2017 to​ 2018, a company reports the​ following:Percentage change in sales​40% increasePercentage change in cost of goods sold​20% increasePercentage change in gross profit​35% increaseIf sales are​ $7,000,000 in​ 2017, what are sales in​ 2018?A.​$9,800,000B.​$9,450,000C.​$7,000,000D.​$2,800,000