If absolute levels of rails at the consecutive axles A, B, and C separated by 1.8 metres are 100.505 m, 100.530 m, and 100.525 m respectively, the unevenness of rails, is

A)
0.065 m
B)
0.055 m
C)
0.045 m
D)
0.035 m

Correct Answer :   0.065 m