[单选题]
If the accuracy in measuring )9y/d/l d 0cj4uht w,fmpaa8lthe position of a part6v7s f1u-ge;4 )fwbun0mwn zticle increases, the accuracy in measuri;w fezwvg bnu u)tm1-nf6s074ng its velocity will
A. increase.
B. decrease.
C. remain the same.
D. be uncertain.
