A 500-Kg (Including the Passenger)sled Is Subject to a Net Force

A 50.0-kg (including the passenger) sled is subject to a net force of 20.0 N pushing in the direction of the sled's motion as it is moving over a horizontal surface for a distance of 11.0 m after having started from rest.At this point the sled is released as it starts down a 10.0 $\degree$ incline.However,the snow is not very deep,and the sled stops after having moved an additional 35.0 m.What is the work done by friction while the sled is on the incline?

A) -220 J
B) -3200 J
C) -858 J
D) -2980 J