A Package Is Placed on the Back of a Flatbed

A package is placed on the back of a flatbed truck. The coefficient of static friction between the package and the bed of the truck is f_s < 0.40. Assuming that the acceleration of gravity is 10 m/s², the maximum velocity tat which he truck can travel around a 25-m-radius curve without losing the load is

A) 36 km/h.
B) 10 km/h.
C) 1.0 * 10² km/h.
D) unknown; the answer cannot be determined without knowing the mass of the object.