Q. A 5 m ladder of mass 25 kg is placed in a position where its inclination to a vertical wall is at 30^o. A 100 kg man is to climb the ladder. If the coefficient of static friction is 0.25 the height along ladder at which the slipping will be induced would be

• (A) 2.4 m
• (B) 1.6 m
• (C) 0.8 m
• (D) 1.2 m