A company plans to implement Dynamics 365 Sales. The company stores data about book locations in the fields, room, and shelf.

The company must import legacy data into the new system. Legacy data must be modified to match the current system design.

You need to recommend a solution to combine the room and shelf fields into a single field on import.

Which tool should you recommend?

A. Data Import Wizard

B. web services
C. Microsoft Excel Online
D. import from CSV