Your client, a physician, recently purchased a yacht on which he flies a pennant with a medical emblem on it. He recently informed you that he purchased the yacht and flies the pennant to advertise his occupation and thus attract new patients. He has asked you if he may deduct as ordinary and necessary business expenses the costs of insuring and maintaining the yacht. In search of an answer, consult the editorial materials in any tax service. Explain the steps taken to find your answer.