What is an indication of successful completion of the OpenShift Cluster installation, prior to any other cluster operation?

An administrator has just installed the OpenShift cluster as the first step of installing Cloud Pak for Integration.

What is an indication of successful completion of the OpenShift Cluster installation, prior to any other cluster operation?
A . The command "which oc" shows that the OpenShift Command Line Interface(oc) is successfully installed.
B . The duster credentials are included at the end of the /.openshifl_install.log file.
C . The command "oc get nodes" returns the list of nodes in the cluster.
D . The OpenShift Admin console can be opened with the default user and will display the cluster statistics.

Answer: D