Ethical question

A runaway train is hurtling down some train tracks towards one person who is your boyfriend/girlfriend/wife/husband, who is tied to the tracks. Luckily, you can save them and rescue them because you found a switch that will divert the train onto another track. Unfortunately, there are four people tied to this diversion track. There is no one on the train to stop it, there is no one else around to help, you are to far from them to get there in time and the people can't escape from their bonds. Do you pull the switch?

Are you a boy or a girl?

How old are you?