The Owner of Landry Photography Has a Soft Spot for Billy

The owner of Landry Photography has a soft spot for Billy Benz, a young shoeshine boy, so she gives him permission to set up his stand on her property in front of the store. She begins to receive complaints that Billy is a little aggressive in soliciting customers, so she tells him he has to go. Billy refuses. Which of the following is TRUE?

A) Billy has a prescriptive right to his space and can't be moved by Landry.
B) There is no landlord-tenant relationship between Landry and Billy, so Landry cannot evict him.
C) Billy has an easement, giving him the right to remain where he is.
D) Landry gave Billy a licence to use the space for shining shoes. He's doing that, so he can't be asked to leave.
E) Landry can revoke the licence which it has given Billy to use its property.