Answer:
First, medium: can see all the subject but maintain the focus in him
Second, close-up: To se the facial expressions and emotions
I agree that it should have been and was a and b.
I would say the best clear answer is D, because A is a little bit unclear but I would say the best answer is D.
Why?
Mesh Topology is expensive considering more links as compared to Ring topology.
Answer:
C. Use the SOAP API to maintain the related SObject_share records
