$1$ point

Suppose two hosts, A and B$,$ are separated by $20,000$ kilometers and are connected by a direct link of R$=2$ Mbps$.$ Suppose the propagation speed over the link is ${2\mathrm{.}5}^{*}{10}^8$ meters $\frac{?}{sec}.$ Consider sending a file of $800,000$ bits from Host A to Host B$.$ Suppose the file is sent continuously as one large message, what is the maximum number of bits that will be in the link at any given time?

$16,000$

$80,000$

$160,000$

$8,000$