153.When approaching a railroad level crossing and you see that the warning bell is ringing and the flashingwarning lights are flashing, but the barrier has not yet come down, the driver should:
(A) Immediatelyaccelerate and pass through the crossing.
(B) Stop immediately before the stop line and must not forciblyenter the crossing.
(C) First observe whether a train is coming and then decide whether to pass.
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