How can an architect advise UC togrant all users at a distributor access to delivery records for all customer distributor?

Universal containers (UC) has a partner community for its 200 distributors. UC customer accounts are .. organization-wide default setting for the custom Delivery object is private.

How can an architect advise UC togrant all users at a distributor access to delivery records for all customer distributor?
A . Create a Sharing set for the Distributor profile to grant access to the Delivery object.
B. Create a criteria-based sharing rule that shares delivery records matching the Distributor to user distributor.
C. Give ownership of the delivery record to a distributor user.
D. Create a criteria-based sharing rule that shares delivery records matching the Distributor to users of a Public Group created for the distributor.

Answer: A