Jan hires Duncan to act as her agent in acquiring some property for the development of a new subdivision she is planning that will be an elegant, planned community. Jan instructs Duncan that he is not to say he is working for her or, for that matter, that he is working for anyone. If Duncan signs a contract with Jan for the land she wanted, then: a. both Jan and Duncan are liable on the contract for the purchase of land. b. Jan can never be held liable for the land because Duncan acted in his name. c. only Duncan is liable on the contract for the purchase of the land. d. Jan can make herself an undisclosed principal on the contract.