The capacity of a spherical conductor in MKS system is:

• A

  $\frac{\mathrm{R}}{4{\mathrm{\pi \epsilon }}_0}$

• B

  $\frac{4{\mathrm{\pi \epsilon }}_0}{\mathrm{R}}$

• C

  $4{\mathrm{\pi \epsilon }}_0\mathrm{R}$

• D

  $4{\mathrm{\pi \epsilon }}_0{\mathrm{R}}^2$