280 Which of the following is incorrect when coming to an level crossing with a gate or a guard? (A)If the alarm goes off, the lights are flashing, the gate is lowering, or if there is a guard signaling you to stop, stop and wait until the gate is lifted or the guard's signal before passing (B)Even if the gate is not lowered or the guard did not signal for the stop, look and listen first before crossing the rail (C)When the gate is lifted, pass the crossing as soon as possible. It is not necessary to check the sides first.