[单选题]
A car goes around a curvefj v2nbl7 cyj.jv82wa bn8t4y 4u ,wp/ ofvjb6p /ged+ jlr8s((n radius $r$ at a constant speed $v$. What is the direction of the net force on the car?
A. toward the curve's center
B. away from the curve's center
C. toward the front of the car
D. toward the back of the car
