Suppose a $128-$Kbps point$-$to$-$point link is setup between the Earth and a rover on Mars. The distance from the Earth to Mars $($when they are closest together$)$ is approximately $55$ Gm$,$ and data travels over the link at the speed of light: $3\backslash$times $108$ m$/$s$.$

$($a$)$ Calculate the minimum RTT for the link. $$

$($b$)$ Calculate the $$data$-$in$-$flight$$ for the down$-$link in MB$.$

$($c$)$ A camera on the rover takes pictures of its surroundings and sends these to Earth. How quickly after a picture is taken can it reach Earth Mission Control? Assume that each image size is $5$ MB$.$