You want to create digital signatures for maintenance order operations.

Which parameters do you have to specify in Customizing?

A. Order type and work center

B. Order type and maintenance plant

C. Order type and planning plant

D. Order type and planner group

Reference: https://help.sap.com/doc/129fcf535b804808e10000000a174cb4/3.6/en-US/frameset.htm