Which approach would an architect recommend to limit the records a distributor can see?

Universal Computers (UC) is looking to expand its delivery capabilities through a network of distributors that use a Partner Community license. UC employees currently can view all delivery records through the organization-wide default (OWD) setting of Public Read Only.

Which approach would an architect recommend to limit the records a distributor can see?
A . Create an ownership-based sharing rule to grant access to the distributor.
B. Remove Read permission from the distributor profile.
C. Set the External OWD to Private for the Delivery object.
D. Create a criteria-based sharing rule to grant access to the distributor

Answer: C