chemistry

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i posted this already but i got the answer for someone elses question.

the pka of acetone is CH3COCH3 is 19.3 which of these bases is strong enough to deprotonate acetone?

a)KOH (pka of H20 = 15.7)
b)Na+ -C(triplebond)CH (pka of C2H2 = 25)
c)NaHCO3 (pka of H2CO3 = 6.4)
d)NaOCH3 pka of CH3OH = 15.6)

i know the answer is b but why is it b? is it because the pka is high?

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