The frequency \(v\) of the radiation emitted by an atom when an electron jumps from one orbit to another is given by \(v\) \(=\mathrm{k} \delta \mathrm{E}\), where \(\mathrm{k}\) is a constant and \(\delta \mathrm{E}\) is the change in energy level due to the transition. Then dimension of \(\mathrm{k}\) is
(A) \(\mathrm{ML}^{2} \mathrm{~T}^{-2}\)
(B) the same dimension of angular momentum
(C) \(\mathrm{ML}^{2} \mathrm{~T}^{-1}\)
(D) \(\mathrm{M}^{-1} \mathrm{~L}^{-2} \mathrm{~T}\)