On a single rail track, goods trains loaded with heavy iron material run starting from ‘A’ to ‘B’ and then empty wagons run from ‘B’ to ‘A’. The amount of creep in the rails:

A. Stop B. Proceed C. Proceed cautiously D. None of the above

A. 25 mm B. 40 mm C. 50 mm D. 10mm

A. 12 m and 12 m B. 12 m and 13 m C. 13 m and 12 m D. 13 m and 13 m

A. 2 B. 3 C. 4 D. none of the above