During leadership election, which members in the local datacenter get a vote to elect a new leader?

During leadership election, which members in the local datacenter get a vote to elect a new leader?
A . Consul server nodes
B. Consul clients
C. Consul servers, read-only server nodes, and clients
D. Consul servers and clients

Answer: A

Explanation:

Consul’s consensus protocol (Serf) is responsible for electing a leader during a new cluster creation or if an existing leader fails. The consensus protocol is only used on Consul server nodes, therefore clients do not participate in voting for a new cluster leader. Furthermore, read-only nodes are also known as non-voting nodes and do not participate in voting for a new leader (hence the name). https://www.consul.io/docs/architecture/gossip