You have a ShafePoint Server 2013 server farm that has Excel Web Services deployed. A user has a Microsoft Excel spreadsheet that uses a dynamic-link library
(DLL) to perform custom calculations.
The user plans to upload the spreadsheet to the farm.
You need to ensure that when the spreadsheet is rendered by Excel Web Services, the custom calculations are performed.
What should you add?
A. A new trust relationship
B. The DLL to the global assembly cache
C. A trusted data provider
D. A user-defined function assembly
