Responsibilities to Clients in Investment Strategy Management

David, a CFA charterholder, has been managing a portfolio for a long-term client, Mrs. Anderson, who relies on the portfolio for her retirement income. Recently, David discovers a new investment strategy that could potentially enhance returns but entails significantly higher risk than Mrs. Anderson's current investment profile. David recalls that Mrs. Anderson explicitly stated her preference for conservative investments during their last meeting. However, he is tempted to suggest the new strategy as it could reflect positively on his performance reports. Given this scenario, which of the following actions would be most appropriate in light of the CFA Institute's Code of Ethics and Standards of Professional Conduct?