单选题 The cost，in dollars，for an appliancerepair at a certain company is 1.2p+20h，where p is the wholesale price of the parts，in dollars，and，2 is the number of hours it takes to repair the appliance．What is the cost of repairing an appliance if the wholesale price of the parts is $15and it takes 2 hours to repair it?
A. $12 B. $18 C. $20
D. $40 E. $58