Which Statement Below Best Explains Why the K_a of Acetylene $\pi$

Which statement below best explains why the K_a of acetylene is greater than that of ethylene?

A) Acetylide anions are resonance stabilized.
B) The 4 $\pi$ electrons of the acetylide anion better stabilize a negative charge.
C) The electronegativity of sp carbons is greater than that of sp² carbons.
D) The electronegativity of sp carbons is less than that of sp² carbons.
E) Acetylene has only two hydrogen atoms while ethylene has four.

Correct Answer:

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