Will you give it to every girl?

Let's say the situation is like this. You are holding 2 apples, and you help to unlock or open a door as a favor to someone. And a girl passed you by to enter the door while you are walking away. Let's say you do stop, and return back to give her one of the apple. Will you do that to any girl who could 1st passed by you, be it attractive, unattractive, slim, fat etc...? Or there's something special about that girl that makes you stop and return to offer her the apple? Does your action indicates anything at all?

I am just trying to find out how most guys will react and their reason. So please try to answer as if you are picturing yourself in that situation. Thanks!