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Which of the following statements are co...

Which of the following statements are correct?
(A) The electronic configuration of Cr is [Ar] `3d^5 4s^(1)`.
(B) The magnetic quantum number may have a negative value.
(C) In the ground state of an atom, the orbitals are filled in order of their increasing energies.
(D) The total number of nodes are given by n - 2.
Choose the most appropriate answer from the options given below :

A

(A), (C) and (D) only

B

(A) and (B) only

C

(A) and (C) only

D

(A), (B) and (C) only

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