祝一战700+，数学牛牛们！！求教数学题

虞姬

In May, Xiang sold 15 used cars. for there 15 cars, the range of the selling price was $15000 and the lowest selling price was $4500. In June, Xiang sold 10 used cars. for there 10 cars, the range of the selling price was $16500 and the lowest selling price was $6100. what was the range of the selling price of the 25 used cars sold by Xiang in May and June. A. $15600 B. $15750 C. $16820 D. $18100 E. $19200 答案选D   祝一战700+