A shopkeeper buys three products a, b, c and sells them at 20%, 30%, 40% profit, respectively. What is ratio of the selling price of these products, if the ratio of their cost prices is 4:3 :2?

A

48 : 39 : 28

B

34 : 54 : 12

C

24 : 39 : 14

D

56 : 26 : 21