You are configuring an LDAP authentication server, and you want to configure role-mapping rules based on group membership. When you attempt to search for groups in the server catalog, no groups appear.Assuming the LDAP server is reachable and functioning properly, in the admin GUI. Which two parts of the configuration should you verify are correct?（）

• A、Finding user entries
• B、Authentication required
• C、LDAP Server Type
• D、Determining group membership