The momentum of the electrons accelerated through a potential difference of $56\; V$ is

Question

$\begin {array} {1 1} (a)\;0.404 \times 10^{-25} kg\:  m/s & \quad (b)\; 40.4 \times 10^{-24} kg \: m/s \\ (c)\; 4.04 \times 10^{-22}kg \: m/s & \quad (d)\;4.04 \times 10^{-24} kg\:  m/s \end {array}$