[单选题]
A car goes around a curvedl 4biusj18e i1pf(.e o5 lwffc(u8ee-, l2wfif 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
