Your database is configured in shared server mode. However， your senior DBA asks you to modifythe value of the PRIVATE_SGA limit in the profile of the users.  What could be the reason for this（）

• A、to limit the User Global Area （UGA） memory allocated to a session from the SGA
• B、to limit the amount of memory to be used for the dispatcher queue of a session in SGA
• C、to limit the amount of memory to be used for the request pool in System Global Area （SGA）
• D、to control the amount of memory allocated in SGA for the local variables for each shared server process