Which security role should you assign to the user?

A company has the following business units:

– Call center

– Customer service

– Digital response

– Escalation

The security roles have not been modified. The customer service business unit is the parent of all other business units. Each business unit has its own queues. Customer service cases are routed to the appropriate individuals by using the queues.

You need to ensure that a specific user within the customer service business unit can read all queues within the parent and child business units.

Which security role should you assign to the user?
A . Customer service manager
B . Scheduler
C . Customer service representative
D . System customizer