With regard to conference node redundancy, if a region requires 2400 G.711 ports, then how many nodes should it include?

A.
Two nodes, each with a capacity of 1200 G.711 ports

B.
Three nodes, each with a capacity of 1200 G.711 ports

C.
One node with a capacity of 2400 G.711 ports

D.
One node with a capacity of 1200 G.711 ports