What is the function of PING LOCALHOST command?

What is the function of PING LOCALHOST command?

A.
It verifies that TCP/IP is bound correctly to the network adapter by communicating with the
successfully initialized IP address.

B.
It verifies that TCP/IP is bound correctly to the network adapter by communicating with the
loopback address 127.0.0.1.

C.
It verifies that TCP/IP is bound correctly to the network adapter by communicating with the
domain controller.

D.
It verifies that DNS is correctly set up to allow communication with a host, named LOCALHO ST.