You want to monitor&en

You want to monitor and control the resource usage by sessions. You want to be warned automatically when more than 100 sessions are opened with your database.  What action would you take to achieve this？（）

• AUse the Database Resource Manager.
• BSet the limits in the profiles used by users.
• CModify the SESSIONS initialization parameter.
• DSet the warning threshold for the Current Logons Count metric.