Two PCs want to access a Token Ring network at the same time. How does a Token Ring control which PC to access the network?

A. Each PC has its own token. Different tokens are running in different frequencies. Whoever has the smallest frequency can access the network.

B. A Token Ring network is like CSMA/CA such that a collision can be avoided.

C. There is a limited number of tokens (usually 1) floating around in the network. Whoever gets the token can access the network.

D. A Token Ring network is like CSMA/CD such that a collision can be detected.