A. The "Power Management" bit should only be set by a client STA and the "More Data" bit should only be set by the AP.

B. The "Power Management" bit should only be set by the AP and the "More Data" bit should only be set by a client STA.

C. The "Power Management" bit and the "More Data" bit should only be set by the AP.

D. The "Power Management" bit and the "More Data" bit should only be set by a client STA.