The measurement of the electron position is associated with an uncertainty in momentum, which is equal to `1 xx 10^-18 g cm s^-1`. The uncertainty in electron velocity is (mass of an electron is `9 xx 10^-28 g`)
A. `1xx10^(5)"cm s"s^(-1)`
B. `1xx10^(-11)" cm s"^(-1)`
C. `1xx10^(9)" cm "s^(-1)`
D. `1xx10^(6)" cm "s^(-1)`
