32. A long ladder leans against a smooth vertical wall, with its base resting on a rough horizontal floor. Let the length of the ladder be L, its weight be W, and the angle it makes with the floor be θ (less than 90°). If the ladder is on the verge of sliding, what is the coefficient of static friction between the floor and the base of the ladder? (A) (1/2) tan θ (B) (1/2) cot θ (C) 2 tan θ (D) 2 cot θ