To implement Automatic Management (AMM), you set the following parameters: When you try to start the database instance with these parameter settings, you receive the following error message: SQL > startup ORA-00824: cannot set SGA_TARGET or MEMORY_TARGET due to existing internal settings, see alert log for more information. Identify the reason the instance failed to start.（）

• A、The PGA_AGGREGATE_TARGET parameter is set to zero.
• B、The STATISTICS_LEVEL parameter is setto basic.
• C、Both the SGA_TARGETandMEMORY_TARGET paramete rsareset.
• D、The SGA_MAX_SIZEandSGA_TARGET parameter value sare note qual.