$1\mathrm{.}4-10$a$.$ Utilization. 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 utilization of the link of capacity R$1?$

Group of answer choices

$1\mathrm{.}0$

$\mathrm{.}5$

$\mathrm{.}10$

$10\mathrm{.}0$