The given histogram shows the frequency distribution of the speed of cars passing though at a particular spot on a highway. Study the graph and answer the question that follows.

The number of cars with speed between 70 km/h and 80 km/his what percentage more than the number of the cars with speed between 50 km/h and 60 km/h? (correct to one decimal place)

A

22.2%

B

15.5%

C

28.6%

D

29.7%