if Mary knows that Jessica and John have contract for John to paint Jessica's house, and if Mary tells John all sorts of (false) awful things about Jesica so that John will not want to work with her, and if John then tells Jesica he has no interest in painting a house for such terrible human being. Mary could be sued for:

a- libel

b- wrongful interference

c- appropriation

d- fraudulent and misrepresentation