When Preparing Terminal Alkynes by an Elimination Reaction, Sodium Amide

When preparing terminal alkynes by an elimination reaction, sodium amide (NaNH₂) dissolved in liquid ammonia (NH₃) is used most frequently. Which of the following statements offers the best explanation for the above statement?

A) The above statement is false; terminal alkynes are not produced under the given conditions.
B) Sodium amide deprotonates the terminal alkyne, driving formation of the alkynide ion.
C) Only sodium amide is a strong enough base to deprotonate a carbon.
D) Terminal alkynes are more stable than the internal alkynes, and are always the favored product.
E) Steric hindrance favors preparation of the less substituted terminal alkyne.

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