You Ride a Roller Coaster Car of Mass 1500 Kg $\times$

You ride a roller coaster car of mass 1500 kg down a frictionless track a distance H = 23m above the bottom of a loop as shown. If the loop is 15 m in diameter, the downward force of the rails on your car when it is upside down at the top of the loop is

A) 4.6 $\times$ 10⁴ N
B) 3.1 $\times$ 10⁴ N
C) 1.7 $\times$ 10⁴ N
D) 0.98 kN
E) 1.6 $\times$ 10³ N