Which of the following statements is false with regard to the right and liabilities of the principal?

a. Since the contract was made for his benefit, an undisclosed principal is permitted to enforce it

b. If the third person elects to recover damages from the agent, the principal is released from any liability to the agent

c. If the third person learns of the principal's identity, she may elect to sue the principal instead of the agent

d. The third person cannot recover damages from both the principal and the agent