To enable the Database Smart Flash Cache, you configure the following parameters: DB_FLASH_CACHE_FILE = ‘/dev/flash_device_1’ , ‘/dev/flash_device_2’ DB_FLASH_CACHE_SIZE=64G What is the result when you start up the database instance?（）

• A、It results in an error because these parameter settings are invalid.
• B、One 64G flash cache file will be used.
• C、Two 64G flash cache files will be used.
• D、Two 32G flash cache files will be used.