Congestion window=$38KB$,
Threshold=$19KB$
If MSS starts from $1KB$, answer is $2800msec$
$1\,|\,2\,|\,4\,|\,8\,|\,16\,|\,19\,|\,21\,|\,23\,|\,25\,|\,27\,|\,29\,|\,31\,|\,33\,|\,35\,|\,36$
=$100 \times 14 \times 2$msec $=2800$
If MSS starts from $2KB$, answer is $2600msec$
$2\,|\,4\,|\,8\,|\,16\,|\,19\,|\,21\,|\,23\,|\,25\,|\,27\,|\,29\,|\,31\,|\,33\,|\,35\,|\,36$
=$100 \times 13 \times 2$msec $=2600$
Both are correct-:https://gateoverflow.in/1794/gate2014-1-27
But In kurose and ross , they are starting MSS from $1KB$
