You plan to create a batch file that defines several trusted workbook locations. You need to ensure that connections that are defined in trusted data connection libraries are allowed to be used.

Which stsadm.exe operation should you use in the batch file?

A.
Add-ecsfiletrustedlocation

B.
Add-ecssafedataprovider

C.
Add-ecstrusteddataconnectionlibrary

D.
Set-ecsexternaldata