[单选题]
A car goes around a cuxczudwue p9;+s4(: kts f.j.jro*v 0y9juqehg70 vw0rve of 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
