The total electric flux emanating from a closed surface enclosing an $\mathrm{\alpha }$-particle (e =electronic charge) is:

• A

  $\frac{2\mathrm{e}}{{\mathrm{\epsilon }}_0}$

• B

  $\frac{\mathrm{e}}{{\mathrm{\epsilon }}_0}$

• C

  ${\mathrm{e\epsilon }}_0$

• D

  $\frac{{\mathrm{\epsilon }}_0\mathrm{e}}{4}$