Which three statements about bridge assurance are true? (Choose three.)
A . Bridge assurance must be enabled on both ends of a link.
B . Bridge assurance can be enabled on one end of a link or on both ends.
C . Bridge assurance is enabled on STP point-to-point links only.
D . Bridge assurance is enabled on STP multipoint links only.
E . If a bridge assurance port fails to receive a BPDU after a timeout, the port is put into a blocking state.
F . If a bridge assurance port fails to receive a BPDU after a timeout, the port is put into an error disabled state.
Answer: ACE