You are designing a data warehouse that uses SQL Server 2012.
The data warehouse contains a table named factSales that stores product sales. The table has a clustered index on the
primary key, four foreign keys to dimension tables, and an aggregate column for sales totals. All key columns use the
int data type and the aggregate column uses the money data type.
You need to increase the speed of data retrieval from the factSales table.
Which index type should you add to the table?