An Electron Has Been Accelerated by a Potential Difference of 100

Multiple Choice

An electron has been accelerated by a potential difference of 100 V.If its position is known to have an uncertainty of 1 nm, what is the percent uncertainty ( $\Delta$ p/p *100) of the electron's momentum?

A) 1%
B) 2%
C) 10%
D) >>10%
E) 5%