You have prescribed knee extension exercises for your patient using a cuff weight. The patient performs these exercises sitting on the edge of their chair with their entire thigh supported by the chair and the lower leg off the floor. The mass of the lower leg and foot is 4.88kg and the cuff mass is 9kg. The cuff weight is located 0.25m distal from the knee joint center. The weight of the lower leg and foot is located 0.11 m distal from the knee joint center.

For each of the following positions (numbers are knee joint angles), calculate the magnitude of the resistance moment on the knee.

A. -90 B. -45 C. 0