$1\mathrm{.}4-05$c$.$ Performance: Maximum Throughput. Consider again the network shown above. Assume that the link with capacity $R_2$ is fairly shared $($as we've seen is done wala TCP$)$ between the two sessions.

What is the maximum end$-$to$-$end throughput achieved by each session, assuming both sessions are sending at the maximum rate possible?

$75Mbps$

$100Mbps$

$50Mbps$

$1$ Mbit

$250Mbps$