Which of the following statements is not true regarding passive sniffing?

A$.$Passive sniffing is effective when a hub is present or in an unprotected wireless network.

B$.$Passive sniffing works only when the traffic you wish to observe and the station that will do the sniffing are in different collision domains.

C$.$Passive sniffing can be done very simply.

D$.$Passive sniffing is difficult to detect because the attacker does not broadcast anything on the network as a practice.