Question: During a financial consultation with her client, Paul, Olivia discovers that Paul is searching for a lawyer for estate planning. Olivia recommends her trusted associate, Marguerite, without suggesting any other possibilities. Marguerite is a reputable lawyer who specializes in estate law. What Paul doesn't know is that Marguerite is Olivia's sister-in-law. What principle under the Code of Conduct is Olivia violating?