Suppose you have a three-dimensional database for OLAP. One of the dimensions is Location, which includes different cities in the U.S. The other dimensions are Product Category (laptop, PC, phone,..) and Month (January, February,). The entries in the database show sales volume for the intersection of these dimensions. If you want to see the sales data for Philadelphia from the month April, what OLAP operation will you use?

slice

dice

drill up

pivot