Study the following graph that shows the number of boys and girls who appeared for the Class X examination in a school XYZ, in different years.

The total number of girls who appeared in 2012, 2013, 20 14 and 2015 is what percentage less than the total number of boys who appeared in all the five years? ( correct to one decimal place)

A

6.6

B

9.7

C

10.1

D

7.7