An Engineer Has Initiated the Ping Command from Cisco IOS

An engineer has initiated the ping command from Cisco IOS. The command showed an output of five exclamation points (!!!!!) . What does this tell the engineer?

A) Some of the messages received a reply, but others timed out.
B) None of the messages received a reply.
C) The syntax of the command was entered incorrectly.
D) All five echo messages received a reply.