What Is the Approximate Uncertainty in the Position of a Proton

Multiple Choice

What is the approximate uncertainty in the position of a proton (1.673 $\times$ 10^-27 kg) in a particle accelerator if its velocity is known to about ±2.5 m/s (total uncertainty is 5.0 m/s) ?

A) ±6.4 $\times$ 10^-9 m
B) ±3.2 $\times$ 10^-9 m
C) ±1.3 $\times$ 10^-9 m
D) ±3.2 $\times$ 10^-8 m
E) ±6.4 $\times$ 10^-10 m