If a responsibility group is not assigned to an onboarding task, who will be assigned by default?

If a responsibility group is not assigned to an onboarding task, who will be assigned by default?
A . The hiring manager will be considered as responsible owner
B. The BPE service user will be considered as responsible owner
C. Both hiring manager and the admin user will be considered as responsible owners
D. The admin user will be considered as responsible owner

Answer: A