If a: b is 4:7 and b:c is 5:6, then a:b:c is

If a: b is 4:7 and b:c is 5:6, then a:b:c is –

A 4: 7: 6

B 14:17:16

C 20:35:16

D 20:35:3

Correct Answer: Option A

a:b = 4:7 = 20:35

b:c = 5:6 = 35:42

So, a:b:c = 20:35:42 (Ans.)