[单选题]
If the accuracy in measurhw ixlo-8w f7 m5wrrs/;u zs/1ing the ve.q-(q9+c+ mx bw b:bphska r/ilocity of a particle increases, the accuracy in measuring its positqbhqp+iwa9 - (:b/.cbmrx +skion will
A. increase.
B. decrease.
C. remain the same.
D. be uncertain.
