Which Transact-SQL batch should you use?

You administer a Microsoft SQL Server 2016 database that contains a table named AccountTransaction.

You discover that query performance on the table is poor due to fragmentation on the IDX_AccountTransaction_AccountCode non-clustered index.

You need to defragment the index.

You also need to ensure that user queries are able to use the index during the defragmenting process.

Which Transact-SQL batch should you use?
A . ALTER INDEX IDX_AccountTransaction_AccountCode ON
AccountTransaction.
AccountCode REORGANIZE
B . ALTER INDEX ALL ON AccountTransaction REBUILD
C . ALTER INDEX IDX_AccountTransaction_AccountCode ON
AccountTransaction.
AccountCode REBUILD
D . CREATE INDEX IDXAccountTransactionAccountCode ON
AccountTransaction.
AccountCode WITH DROP EXISTING