Following is the data for transmission system of a Gear box reduction ratios.
1^st gear - 4.3 : 1
2^nd gear - 3.00 : 1
3^rd gear - 2.71 : 1
4^th gear - 1 : 1
Final drive reduction is 5.0 : 1
The overall reduction when the vehicle is driven in 2^nd gear is

A. 3.00 : 1

B. 13.55 : 1

C. 5 : 1

D. 15 : 1

Answer: Option D