No person shall work or travel on any ledge or foot path less than . . . . . . . . meters wide from where he is likely to fall more than . . . . . . . . unless he is protected by guard rails fence or safety belt or rope suitably fixed and sufficiently strong to prevent him from falling.

A. 1.9, 1.4

B. 1.5, 1.8

C. 2, 2.4

D. 3.5, 4.2

Answer: Option B