For a Broad Gauge route with (M + 7) sleeper density, number of sleepers per rail length is

For a Broad Gauge route with (M + 7) sleeper density, number of sleep

1.	For a Broad Gauge route with (M + 7) sleeper density, number of sleepers per rail length is
A.	18
B.	19
C.	20
D.	21
Answer» D. 21