Is Marriage a 50/50 Proposition?

I am posting an exam below that a company used to hire someone. It reminds us to put others ahead of ourselves and life is not always about us being #1. Marriage is putting others ahead of yourself as well.

One big company was hiring new staff, one of the questions from the written exam was: 

All by yourself, you are driving a car on a bad stormy night. You pass a bus station, where there are three people waiting for the bus; one old lady who is dying, one doctor who saved your life before, one gorgeous guy/lady who is someone you have been dreaming to be with. Due to the limited room in the car, you can give lift to only one person. Which one you will choose? Please explain your reason.
Think about it before you read the following... What will be your answer ?Every answer has its reason.

* The lady who is about to die, you should save her first. However, she is dying anyway. Is it worth it?
* May be you should take the doctor, because the doctor saved your life before, this is the perfect chance to pay him back. He may live to save more lives... On the same token, you have already paid his fees....

* The person you have dreamed about... You may never be able to find such an opportunity again. Stormy night spent all cuddled up....
Among the two hundred candidates, the one who was hired, simply stated, "I would give the car key to the doctor, so that he can take the old lady to the hospital and I stay to wait for the bus with the lady of my dream!"

Everyone I know think the above answer is the best answer, but there is no one (including myself) who can think of this answer first. Is that because we never want to give up anything? Not letting go anything? Think about it.