The door’s sense of rotation is clockwise about the z-axis. Show that the torque about the origin is given by 〈 n1, n2, n3〉.

A. 〈 n1, n2, n3〉
B. 〈 -n1, -n2, -n3〉
C. 〈 -n1, -n2, n3〉
D. 〈 n1, -n2, -n3〉