Mark works as a bartender at The Little Nipper, a local bar. Under state law, bartenders are required to be licensed. The licensing requires filling out an application and submitting a $50 application fee. The application does not require any special education or experience, just the $50 fee. Craig enters Mark's bar, orders a round of drinks for the house, then notices that Mark's license is not on display behind the bar. Craig learns that Mark is not licensed and refuses to pay for the round of drinks. The Little Nipper sues. What result? a. Since this is an illegal contract, the courts will not enforce it. b. Since Mark violated a regulatory statute, the contract is unenforceable. c. Since this is a revenue-raising statute, The Little Nipper wins. d. Since this is a revenue-raising statute, the licensing law is unconstitutional. Craig wins.