Compute the torque (in Nm) the shoulder must exert when the forearm is extended (shown in posture A). (Hint: Torque of shoulder = Torque of upper arm + Torque of forearm)

A) Torque = Upper Arm Torque + Forearm Torque
B) Torque = Upper Arm Torque - Forearm Torque
C) Torque = Upper Arm Torque × Forearm Torque
D) Torque = Upper Arm Torque ÷ Forearm Torque