Which of the following statements about the ARPANET and the Internet is false?

Today's fastest Internet speeds are on the order of millions of bits per second with billion$-$bits$-$per$-$second $($gigabit$)$ speeds already being tested.

The ARPANET was the precursor to today's Internet.

The protocol $($set of rules$)$ for communicating over the ARPANET became known as the Transmission Control Protocol $($TCP$).$ TCP ensured that messages, consisting of sequentially numbered pieces called packets, were properly delivered from sender to receiver, arrived intact and were assembled in the correct order.

Although the ARPANET enabled researchers to network their computers, its main benefit proved to be the capability for quick and easy communication via what came to be known as electronic mail $($e$-$mail$).$