What Are the Advantages of Token(with Rings) Passing Approach

Multiple Choice

What are the advantages of token(with rings) passing approach?
i. One processor as coordinator which handles all requests
ii. No starvation if the ring is unidirectional
iii. There are many messages passed per section entered if few users want to get in section
iv. One processor as coordinator which handles all requests
v. Only one message/entry if everyone wants to get in

A) i
B) ii and iii
C) i, ii and iii
D) i, ii and iv