John acted as an agent for Simpson Securities and negotiated a contract for them with Carson Cameras, Inc. In these negotiations, Carson Cameras did not know that the contract with John was for Simpson Securities and thought the deal was only with John. So Simpson Securities was an undisclosed principal. Which of the following statements best describes John's status as to the contract that he negotiated with Carson Cameras?
A. Carson Cameras can go after both John and Simpson Securities for breach of contract.
B. Carson Cameras can only go after John for breach of contract.
C. Carson Cameras can only go after Simpson Securities and not John for breach of contract.
D. Carson Cameras can not go after John nor Simpson Securities for breach of contract.