Which two field service security roles will the new technician user need?

The field service team manager needs you to give a new technician user access to the system. The technician will use the mobile application to fill out work orders when they are onsite doing filed work to repair factory motors at customer sites. When the dispatcher takes vacation, the new technician user will manage dispatcher functions.

Which two field service security roles will the new technician user need? Each correct answer presents part of the solution.
A . Field Service-Dispatcher
B . Field Service-App Access and Field Service -Resource
C . Field Service-Mobile User
D . Field Service-User

Answer: A, B