Use the figure to the right for the next problems. An object of mass m = 200 g slides down a frictionless ramp from a height H = 60 cm. Near the bottom of the ramp, the path changes into an arc of a circle with radius r = 20 cm. The arc has coefficient of kinetic friction k = 0.4. The angle = 120 and points P1 and P2 which are the ends of the arc, are at the same height. -The work done by a conservative force between two points is A) always positive. B) always dependent upon the time. C) always independent of the path. D) zero. E) never completely recoverable.