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

If absolute levels of rails at the consecutive axles A, B, and C separ

1.	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
Answer» B. 0.055 m