Which Transact-SQL operator should you use?

You use Microsoft SQL Server 2012 database to develop a shopping cart application.
You need to rotate the unique values of the ProductName field of a table-valued expression
into multiple columns in the output.
Which Transact-SQL operator should you use?

A.
CROSS JOIN

B.
CROSS APPLY

C.
PIVOT

D.
UNPIVOT

Explanation:
http://technet.microsoft.com/en-us/library/ms177634.aspx