question_answer

If A, B, C and D are four numbers such that     A : B = 3 : 4; B : C = 5 : 7 and C : D = 8 : 9, then consider the following statements:

I. The ratio of A to C is 15 : 28

II. The ratio of B to D is 2: 3

III. The ratio of A to D is 10 : 21.

Which of the above statements are correct?

A)  I, II and III                          

B)  I and II only

C)  II and III only                    

D)  I and III only