R$17.$ Consider two hosts, A and B$,$ transmitting a large file to a server C$,$ overa bottleneck link with rate R$.$ To transfer the file, the hosts use TCP with the same parameters $($including MSS and RTT$)$ and start their transmis$-$ sions at the same time. Host A uses a single TCP connection for the entire file, while Host B uses $9$ simultaneous TCP connections, each for a portion $($i$.$e$.,$ a chunk$)$ of the file. What is the overall transmission rate achieved by each host at the beginning of the file transfer? Is this situation fair?