Rett Shields, CFA, decides to change to change her recommendation on TelSky from "buy" to "sell". In the morning, she mails the revision to all her clients with a known interest in TelSky. That afternoon, one of these clients calls in an order to buy $15,000$ shares of TelSky. According to the Standard on fair dealing, Shields:

must accept the order without mentioning the change because the Standards requires her to inform all clients of the change in recommendation simultaneously.

should advise her customer of the change in her recommendation before accepting the order

must not accept the order until the customer has had time to receive and review the report.