You are a database developer. You plan to design a database solution by using SQL Server
2008. A database contains a table named Person. The structure of the table is as shown in
the following exhibit. (Click the Exhibit button.) The table has the following indexes: ·A
unique clustered index on the PersonID column named IX_Person_PersonID ·A
nonclustered index on the FirstName and LastName columns named
IX_Person_FirstName_LastName ·A nonclustered index on the PersonType column named
IX_Person_PersonType that has FirstName and LastName as included columns The table
contains approximately 700,000 records. The approximate number of records for each
PersonType is 3,000. You execute the following query. SELECT P.FirstName, P.LastName
FROM Person P WHERE P.PersonType = ‘DR’ You plan to analyze the performance of the
query by using an execution plan. You need to ascertain that the indexes are used
optimally. What should you do?

A.
Verify that an index seek operation is performed on the IX_Person_PersonType index.

B.
Verify that an index seek operation is performed on the IX_Person_PersonType index,
and a key lookup operation is performed on the IX_Person_PersonID index.

C.
Verify that a clustered index scan operation is performed on the IX_Person_PersonID
index.

D.
Verify that an index seek operation is performed on the IX_Person_PersonType index,
and an index scan operation is performed on the IX_Person_FirstName_LastName index.