With respect to duties owed by an agent to his principal, which of the following statements is false with regard to agency law?
a. Generally, an agent may not delegate his authority without the authorization of his principal.
b. Failure of an agent to perform his duties personally may allow his principal to sue the agent for breach of contract.
c. Failure of an agent to obey his principal and to act within the authority given him allows the principal to sue the agent for breach of contract.
d. An agent must use reasonable care, skill and diligence in the performance of his duties as agent.
e. When an agent enters a contract on behalf of his principal but does so in breach of his duties to the principal, the contract is void and cannot bind the principal.