What is the impact of these sharing settings?

Universal Containers (UC) has created a public group with certain Sales Engineers to help on complex deals and a sharing rule to grant access to these opportunities. Opportunity OWD is private.

What is the impact of these sharing settings?
A . Subordinates of Managers who have Sales Engineers in the public group will also have access to these records.
B. Sales Engineers that have a similar role of the Sales Engineers of the public group will also have access to these records.
C. Sales Engineers Managersand their managers in the role hierarchy will also have access to these records.
D. Sales Engineers direct reports will also have access to these records.

Answer: C