Which recommendation should a Salesforce architect give to allow this scenario?

To reduce the case time resolution and improve customer satisfaction, Universal Containers (UC) wants to allow specialized marketing consultants to have edit access to Case records of VIP customers. These casts should be visible only to the support rep who owns the case and the marketing consultants.

Which recommendation should a Salesforce architect give to allow this scenario?
A . Case organization-wide default Private and Account Team with Read/Edit permission.
B. Case organization-wide default Public Read Only and Case Team with Read permission.
C. Case organization-wide default Private, role hierarchy, and Read Only ownership-based sharing rule.
D. Case organization wide default Private and Case Team with Read/Edit permission.

Answer: D