A metal rod of length L and mass m is pivoted at one end. A thin disk of mass M and radius R (< L) is attached at its center to the free end of the rod. Consider two ways the disc is free to rotate about its center. The rod-disc system performs SHM in vertical plane after being released from the same displaced position. Which of the following statement(s) is/are true?
(A) Restoring torque in case A=Restoring torque in case B
(B) Restoring torque in case A<Restoring torque in case B
(C) Angular frequency for case A>Angular frequency for case B
(D) Angular frequency for case A<, angular frequency for case B
