$1\mathrm{.}4-1$a$.$ Maximum end$-$end throughput. Consider the scenario shown below, with a single source client sending to a server over two links of capacities R$1=100$ Mbps and R$3=10$ Mbps$.$

What is the maximum achievable end$-$end throughput $($in Mbps$,$ give an integer value$)$ for the client$-$to$-$server pair, assuming that the client is trying to send at its maximum rate?

Group of answer choices

$100$ Mbps

$10$ Mbps

$1$ Mbps

$\mathrm{.}1$ Mbps

$10$ secs$.$