$1\mathrm{.}4-8$ Maximum end$-$end throughput $($e$).$ Consider the scenario below where $4$ TCP senders are connected to $4$ receivers. Servers $1-3$ transmit to the receiving hosts at the fastest rate possible $($i$.$e$.,$ at the rate at which the bottleneck link between a server and its destination is operating at $100\%$ utilization, and is fairly shared among the connections passing through that link$).$ Server $4$ has nothing to send, so its sending rate is zero

Suppose that R $=1$ Gbps$,$ Rc is $300$ Mbps and Rs is $400$ Mbps$.$ What is the TCP throughput achieved on each of the $3$ active$-$sending connections?

Question $8$ options:

R$/4$

Rc

R

Rs

$4$R