In the context of the network graph in the picture below, where D is the flow$-$source and S is the

destination respectively; the tuple $($x$,$y$)$ next to each edge represents the bandwidth value in mbps $($x

mbps$)$ and delay value in seconds $($y seconds$)$ respectively; answer the following question.

$1,$ What is the highest bandwidth path from D to S in the network? What is its value in mbps$?$

$2,$ What is the least delay path from D to S in the network? What is its delay value in secs$?$

$3,$ What is the total bandwidth $($in mbps$)$ available for flows from D to S in the network?