In mid-July, the Jefferson’s sell their home to the Trainers. The Jefferson’s know that their oil furnace doesn't work. The a. rule of caveat emptor, or "buyer beware," applies. b. Jefferson’s have a duty to disclose the problem. c. Jefferson’s don't have to disclose the problem because a broken furnace does not affect the value of a home. d. Jefferson’s have no obligation to disclose the problem.