Which statement is false?

PING is a TCP/IP application that sends datagrams once every second in the hope of an echo response from the machine being PINGED

If the machine is connected and running a TCP/IP protocol stack, it should respond to the PING datagram with a datagram of its own

If PING encounters an error condition, an ICMP messageis not returned

PING display the time of the return response in milliseconds or one of several error message