Mary Is an Agent for ABC Photography,owned by Phil

Mary is an agent for ABC Photography,owned by Phil.Without disclosing her agency status,Mary agrees by contract to take Polly's wedding photographs.When Phil finds out,he explains the agency relationship he has with Mary to Polly and says that he wants to take the photographs because a lady he wants to ask out on a date is expected to be at the wedding.When Polly finds out,she says "No way - I choose Mary." Which of the following is true regarding the rights of the parties?

A) Polly has a right to insist that Mary take the photographs because Polly's contract required Mary's services.
B) Phil has a right to take the photographs only if his contract with Mary expressly provides that he can take over her photo shoots.
C) Phil has a right to take the photographs.
D) Phil has a right to take the photographs only if the contract is in an amount over $500.
E) Phil has a right to take the photographs unless the contract Mary has with Polly is in writing in which case Polly has the right to insist that Mary take the photographs.