A car passes over a hill on the road, first going up, then down. At the very top of the hill, when the car's instantaneous velocity is passing through horizontal, how does the magnitude of the total normal force on the car compare to the magnitude of the car's weight ?

A. F_N is less than F_g

B. F_N = F_g

C. F_N is greater than than F_g

D. F_N = 0

E. Not enough information for a reasonable answer