Let $[\varepsilon_0]$ be the dimensional formula of the permittivity of free space. If $M = \text{mass}$,$L = \text{length}$,$T = \text{time}$,and $A = \text{electric current}$,then which of the following is correct?

  • A
    $[\varepsilon_0] = [M^{-1} L^{-3} T^2 A]$
  • B
    $[\varepsilon_0] = [M^{-1} L^{-3} T^4 A^2]$
  • C
    $[\varepsilon_0] = [M^{-1} L^2 T^{-1} A^{-2}]$
  • D
    $[\varepsilon_0] = [M^{-1} L^2 T^{-1} A]$

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