On an OpenVMS node running DECnet Phase IV, you try to connect to node VMS2, DECnet address 10.200.
You do a SET HOST 10.200, and it connects successfully. Then, you try SET HOST VMS2. You get the following
message:
%SYSTEM-F-NOSUCHNODE, remote node is unknown
Which command would help determine what is wrong?

A.
MCR NCP SHOW KNOWN LINES

B.
MCR NCP SHOW KNOWN NODES

C.
MCR NCP SHOW KNOWN OBJECTS

D.
MCR NCP SHOW UNKNOWN NODES