Which two actions can be configured by a wireless station using ADDTS when Call Admission Control is configured?

Which two actions can be configured by a wireless station using ADDTS when Call Admission Control is configured? (Choose two.)

A.
Modify access category parameters used for APSD.

B.
Change between two power-save modes.

C.
Gain admission to use an access category within a BSS.

D.
Change the protocol to be used in communication.