The trolley problem, history version

You are walking through a rail yard when you notice a runaway trolley for carrying explosive careening your way. Directly in its path are 1 Jew, bound and lying across the tracks. He will die if nothing is done.

There is a lever nearby. Pulling it will divert the trolley onto another track. On this other track, however, is 5 Nazis who cannot hear or see you or the trolley. You can stand by and do nothing, watching 1 Jew to die, or you can pull the lever, directly causing one 5 Nazi's death. Which is the more ethical choice?