What is preventing the Supervisor from viewing records owned by the subordinate?

The organization wide defaults for a custom object is set to private. The Supervisor profile grants view access to the same object. A user with the Supervisor profile is also listed as the Manager on the user detail records for access. However, the supervisor still cannot view records owned by the subordinate .

What is preventing the Supervisor from viewing records owned by the subordinate? Choose 2 answers
A . The Supervisor’s role is not above the subordinate’s role in hierarchy
B . Organization wide settings for the custom object grant access to other users with the same role
C . Organization wide settings for the custom object do not grant access using hierarchy
D . The Supervisor requires a permission set in order to view the subordinate’s record

Answer: A,C