if a vehicle is traveling at a speed of $35\mathrm{.}9$ m$/$s $,$ how long in hours will it take to reach $693$ km$?$

a$)0\mathrm{.}0536$ hr

b$)1340$ hr

c$)4\mathrm{.}17$ hr

d$)5\mathrm{.}36$ hr

e$)20\mathrm{.}7$ hr