The correct option is B 200 km
Distance covered by the car in 1 hour = 40 km
So, in 2 hour it will cover = 40 + 40 = 80 km
Similarly in 3 hour it will cover = 40 + 40 + 40 = 120 km
In 4 hour it will cover = 40 + 40 + 40 + 40 = 160 km
In 5 hour it will cover = 40 + 40 + 40 + 40 + 40 = 200 km