When adding a new cluster member, the cluster node state is indicated by a yellow radio button
icon in the Admin UI.
Which cluster node state is correct?

A.
The node is enabled, not accepting user requests.

B.
The node is transitioning.

C.
The node is enabled, unreachable.

D.
The node is disabled.

Explanation:
http://www.juniper.net/techpubs/en_US/sa7.3/information-products/pathway-pages/saseries/sa-service-clustering.pdf (page 10, status column, second bullet)