Electron Configuration principles

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To determine the correct electronic configuration for carbon in its ground state, the discussion centers on the application of three key principles: the Aufbau Principle, Hund's Rule, and the Pauli Exclusion Principle. The Aufbau Principle states that electrons fill the lowest energy orbitals first, while Hund's Rule emphasizes that electrons will occupy degenerate orbitals singly before pairing up. The Pauli Exclusion Principle asserts that no two electrons can have the same set of four quantum numbers. The consensus in the discussion suggests that all three principles must be applied to accurately establish the ground state configuration of carbon, leading to the conclusion that option E, which includes all three principles, is the correct answer.
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Which principle or rule must be used to determine the correct electronic configuration for carbon in its ground state?
a.Aufbau Principle
b. Hund's Rule
c. Pauli Exclusion Principle
d. (A) and (B) only
e. All three

I know for a fact that Aufbau's and Hunds rule deal with ground state configuration i just don't know if you consider Paulis rule, which says that no two electrons can have the same 4 quantum numbers, when you are conforming an electron to its ground state?

Can any help me, my answer as of know is D but I am second guessing myself with E
 
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Hello

As far as I remember, you have to apply the three principles. Pauli, AufBau and Hund.
 
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