[单选题]
If the accuracy in measuring the velocity o).jv1;1 srlq0q9h g1lpogm; ;z dce rof a paea6ygv) 7. k 1m/y*dveleg8gp rticle increases, the accuracy in measuring its positiogp /)g7ve*. ymvkyd61ale g8en will
A. increase.
B. decrease.
C. remain the same.
D. be uncertain.