What is the dimensional formula of capacitance?

Options

A. (a) `[M^-1L^-2T^4A^2]`
B. (b) `[M^-1L^-2T^4A^-2]`
C. (c) `[M^-1L^-2T^-4A^2]`
D. (d) `[M^-1L^-2T^-4A^-2]`