Mary Is a Bartender at a Local Pub

Mary is a bartender at a local pub.The state in which Mary works requires all bartenders to be licensed.No special education or experience is required,but one must pay $25 per year for the license.Mary was not aware of this,so she did not obtain a license.When her boss found out about this,he refused to pay Mary for the two weeks of work that she had done.Mary sues.What results?

A) Because this is an illegal contract,the courts will not enforce it.
B) Because Mary violated a regulatory statute,the contract is illegal.
C) Because this is a revenue raising statute,Mary can collect her wages.
D) Because this is a revenue raising statute,Mary cannot collect her wages.
E) Because this type of licensing is unconstitutional,Mary can collect her wages.