On Your First Spring Break,you Go in a Bar After

On your first spring break,you go in a bar after reading a large sign outside saying,"Beers $1.00 each all night long.If you can drink 30,they're all free?we'll pay for a taxi." You pay for your beers as you drink,and you manage to drink 30 beers.The bar agrees that you drank 30 beers,but refuses to refund your money.You sue the bar.Which is most likely true?

A) This contract is voidable by the bar if you get so intoxicated while drinking the 30 beers that you don't comprehend the nature of what you are doing.
B) The sign is an offer for a bilateral contract because both you and the bar must do something.
C) A court would ignore this contract on the basis of illegality even if it does not violate a specific statute.
D) There is no consideration on your part if you don't pay for the beer.