John Operates a Small Grocery Store

John operates a small grocery store.Much of his business is selling beer and snacks to customers.Frequently he has underage individuals attempt to buy beer.John knows that it is illegal to sell to underage persons but he hates to turn away the business.He comes up with the idea of selling snack cakes to persons under 21 at an inflated price and giving them a free six-pack of beer.The inflated snack cake price more than covers the cost of both items and returns a tidy profit.John runs his scheme for about a week until a police officer arrests him for providing alcohol to a minor.John says,"I know it is illegal to sell to a minor but I did not know it was against the law to give alcohol to a minor." The police officer could correctly respond to John,"Your ignorance of the law regarding alcohol:

A) will NOT be a defense to the charge."
B) is a defense if you received bad legal advice from your attorney."
C) may be a defense if you can convince the judge that your mistake was reasonable."
D) will be a defense if you maintained a written record of the names and birthdates of the minors to whom you provided the alcohol."