Which statement is FALSE regarding use of admission control in a QoS BSS?

A.
The IEEE 802.11 QoS facility implements a single admission control mechanism for use in contention-free periods (CFPs) and contention periods (CPs).

B.
The ACM bit is static for the duration of the lifetime of a BSS.

C.
If a QoS STA desires to send data without admission control using an access category (AC) that mandates admission control, the QoS STA will use a lower priority AC that does not use admission control.

D.
A QoS AP uses ACM subfields in the EDCA Parameter Set element to indicate admission control requirements for each access category (AC).

E.
A hybrid coordinator may enforce admission control policies during both contention-free periods (CFPs) and contention periods (CPs).