Explanation/Reference:
Explanation:
REPAIR_REBUILD
Performs repairs that have no possibility of data loss. This can include quick repairs, such as repairing missing rows in non-clustered indexes, and more time-consuming repairs, such as rebuilding an index.
Incorrect Answers:
A: The REPAIR_ALLOW_DATA_LOSS option is a supported feature but it may not always be the best option for bringing a database to a physically consistent state. If successful, the REPAIR_ALLOW_DATA_LOSS option may result in some data loss. In fact, it may result in more data lost than if a user were to restore the database from the last known good backup.
B: REPAIR_FAST
Maintains syntax for backward compatibility only. No repair actions are performed.
E: Restoring from backup is not the fastest solution.
References: https://docs.microsoft.com/en-us/sql/t-sql/database-console-commands/dbcc-checkdb- transact-sql