estion $11$ Question $111\mathrm{.}65$ points Which of the following statement are true about the $802\mathrm{.}11($WiFi$)$ MAC protocol? The $802\mathrm{.}11$ MAC protocol performs collision detection. That is$,$ an $802\mathrm{.}11$ sender will listen to the channel while it is transmitting, and stop transmitting when it detects a colliding transmission from another node. The $802\mathrm{.}11$ MAC protocol performs carrier sensing$.$ That is$,$ it listens before transmitting and will only transmit if the channel is sensed idle. The $802\mathrm{.}11$ MAC protocol performs collision avoidance. That is$,$ an $802\mathrm{.}11$ sender and receiver can use approaches such as RTS$/$CTS$,$ inter$-$frame spacing, and explicit acknowledgments to try avoid, rather than detect, colliding transmissions from another node.