What should be done to verify that the two new nodes called RACNODE5, RACNODE6 are physically connected?

The original cluster on RACNODE1, RACNODE 2, RACNODE 3, and RACNODE4 had the Oracle
Grid Infrastructure installed to support Grid Naming Service (GNS).
What should be done to verify that the two new nodes called RACNODE5, RACNODE6 are
physically connected?

A.
cluvfy stage -post crsinst -n RACNODE5,RACNODE6 -verbose

B.
cluvfy stage -post nodeadd -n RACNODE5,RACNODE6 -verbose

C.
cluvfy stage -post hacfg -verbose

D.
cluvfy stage -post nodeadd -n all �verbose

Explanation:
Completing OUI Silent Node Addition

Perform integrity checks on the cluster.
[grid@host01]$ cluvfy stage post nodeadd n host03 -verbose
D60488GC11
Oracle 11g: RAC and Grid Infrastructure Administration Accelerated 4 – 8