When deploying API Connect on an OpenShift cluster, what are the minimum number of nodes required for high availability for the platform?

When deploying API Connect on an OpenShift cluster, what are the minimum number of nodes required for high availability for the platform?
A . 2 Master Nodes and 2 Worker Nodes
B . 1 Master Node and 2 Worker Nodes
C . 1 Master Node and 3 Worker Nodes
D . 3 Master Nodes and 3 Worker Nodes

Answer: C