A plum is positioned at coordinates (-3.36 m, 0, 3.40 m). In unit-vector notation, find out the torque about the origin on the plum when that torque is due to a force whose only component is (i) Fx = 1.96 N, (ii) Fx = -1.96 N, (iii) Fz = 1.96 N and (iv) Fz = -1.96 N?