[单选题]
Two trucks X and Y are p t.qauojv h0f.q4*b- vulling a car out of thick sdxug-x5k.4 y mud along a straight path. The only otheu xy sgk-d5.x4r horizontal force acting on the car is a drag force opposite to the direction of motion. The diagram shows the direction of the force applied by truck X and the direction of motion of the car.
Which of the following vectors shows the direction of the force applied by truck Y?