An Engineer Initiated a Cisco IOS Ping and Received an Output

Multiple Choice

An engineer initiated a Cisco IOS ping and received an output of two exclamation points, one period, followed by another two exclamation points (!!.!!) . What does this output tell the engineer?

A) None of the echo messages received a reply.
B) The third echo message is the only one to receive a reply.
C) The third echo message timed out, but all the others received a reply.
D) All five of the echo messages received a reply.