Which of the following is the ground state electronic configuration of Cr?(Atomic number of Cr is 24)

Options

A. `1s^2 2s^2 2p^6 3s^2 3p^6 3d^4 4s^2`
B. `1s^2 2s^2 2p^6 3s^2 3p^6 3d^5 4s^1`
C. `1s^2 2s^2 2p^6 3s^2 3p^6 3d^6`
D. `1s^2 2s^2 2p^6 3s^2 3s^2 3p^6 3d^3 4s^2 4p^1`