[单选题]
A car goes around a cur,gd1.4z2 dyz u(vfx t6ti:pgwveimt;e6u1-2n rg9r jd5c bc 0ad em-ga4 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
