[单选题]
If the accuracy in measuring the velocite2g7+ yvuiqq ei:r+zq9 rm ;;by of a partb9a 9g;iahq6ynuw z cp,q.w/6 icle increases, the accuracy in measurw abazhci ,; q99.wnguq66/p ying its position will
A. increase.
B. decrease.
C. remain the same.
D. be uncertain.