To keep this going, the people's unopposed choice: B.
You run over to a large duffel bag in the corner of the room, sling your M1 garand over your sholder and holster your pistol, before grabbing whatever ammunition you can. You run for the nearest hatch, which is being closed already. You:
A: Shoulder-ram it and teach the guy on the recieving end a lesson of why you don't lock survivors in the lower decks! D:<
B: Shout at him, telling him survivors are down here. That may atleast get him to change his mind about doing this.
C: Shoot at the metal hatch! I mean, what could go wrong...
D: Bash on the hatch with the butt of your rifle! That could probably get the crew member's attention to let you and the others up to the life-boats.