TestKing.com uses SQL Server 2005. Users report that report execution is slow. You investigate and discover that some queries do not use optimal execution plans. You also notice that some optimizer statistics are missing and others are out of date.
You need to correct the problem so that reports execute more quickly. Which two Transact-SQL statements should you use? (Each correct answer presents part of the solution. Choose two.)

A.
DBCC CHECKTABLE

B.
ALTER INDEX REORGANIZE

C.
UPDATE STATISTICS

D.
CREATE STATISTICS

E.
DBCC SHOW_STATISTICS

F.
DBCC UPDATEUSAGE

Explanation:
When a DBA creates an index, the query optimizer stores statistical information about the indexed columns. Additionally, CREATE STATISTICS, will create statistics on columns that are not contained in indexes but that are used in query predicates. UPDATE STATISTICS will optimize query performance.