The following data pertains to the number of commercial vehicles per day for the design of a flexible pavement for a national highway as per IRC : 37 - 1984.
Type of commercial vehicle Number of vehicle per day considering the number of lanes Vehicle damage factor
Two-axle trucks 2000 5
Tandem-axle trucks 200 6

Assuming a traffic growth factor of 7.5% per annum for both the types of vehicles, the cumulative number of standard axle load repetitions (in million) for a design life of 10 yrs is
A. 78
B. 44.6
C. 62.4
D. 57.8