单选题 Ian O'Sullivan, CFA, is the owner and sole employee of two companies, a public relations firm and a financial research firm. The public relations firm entered into a contract with Mallory Enterprises to provide public relations services, with O'Sullivan receiving 40,000 shares of Mallory stock in payment for his services. Over the next 10 days, the public relations firm issued several press releases that discussed Mallory's excellent growth prospects. O'Sullivan, through his financial research firm, also published a research report recommending Mallory stock as a "buy." According to the CFA Institute Standards of Professional Conduct, O'Sullivan is most likely required to disclose his ownership of Mallory stock in the