Candy wrappers

I was on the subway one day recently. A young kid, could not have been older then 13 sat across from me diagonally by six or so seats. It was just me and him on this car. I watched him throw the wrapper of his candy bar right on the floor of the car. Should I or shouldn't I say something? What would you do?

Option one: "Hey son, don't you know that littering harms us all? Our civic duty is to respect the common municipal property. So please do your part and dispose of your garbage in the proper receptacle!" in my best Wally Cleaver. What is the probability that the kid picks it up and contritely promises to do better next time? What is the probability that he tells me to go BLEEP myself? Would you be humble enough to be corrected by a stranger even when you know you're wrong? Not bloody likely. 

Don't worry - I'm aware that the Metropolitan Transit Authority does not need yet another superhero/psychopath trolling the subways and buses, accosting passengers about candy wrappers and spilled coffee.

Option two: Look the other way. Its not my problem. What a shame... etc. (this is what I did)

*Option three - Darn! I thought of this one later that night, too late, but I'll know next time. I would have gotten up walked over to the wrapper - bent over and picked it up - saying nothing - but making eye contact that says, "I'm picking up your garbage because you won't, and you know its wrong, so everytime you do it from now on, at least you will be aware of the fact that you are acting wrongly." And for extra credit, "Every time you throw your snickers wrapper on the floor someone has to pick it up, which is however infinitesimally small still both a needlessly added responsibility to another and  a waste of public resources." Yes, one look can communicate that to another. Provided they are "listening". 

Its just a candy wrapper! Relax!

I'm not getting self righteous in this case because I don't litter, and I'm not judging the kid, only the action.