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Which of the following statements are correct?

(A) Work function (ϕ) is same for all metals.

(B) Specific charge (e/m) of electron is greater than that of proton.

(C) The electronic configuration of Cu is violating Aufbau principle

(D) Bohr's model can be applied to multielectron system.

(E) Ar, S²⁻, Ca²⁺ and K⁺ are isoelectronic species Choose the correct option

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