Suppose that the object in Question 11.9 is released from rest with the bar tilted at 60° above the horizontal with the ball at the upper end. As it is falling, will it

(a) Rotate about its center of gravity until it is horizontal;

(b) Rotate about its center of gravity until it is vertical with the ball at the bottom;

(c) Rotate about the ball until it is vertical with the ball at the bottom; or 

(d) Remain at 60° above the horizontal?