c$)$ A camera with focal length $152mm$ was used to take photos in $3$ locations of the county. At location A$,$ the flying height was $2280m.$ Location $B$ is $700m$ above sea level whereas location $C$ is $1300m$ above sea level.

i$.$ What flying height should be maintained at $B$ and $C$ so as to obtain the same scale in all the three locations? $2980$

ii$.$ Calculate the precision at each location given the contour interval to be $2m$