Predict the Major Product(s) for the Reaction of Pent-1-En-4-Yne with Sodium

Multiple Choice

Predict the major product(s) for the reaction of pent-1-en-4-yne with sodium amide followed by reaction with bromoethane.

A) hept-1-en-4-yne
B) hept-6-en-3-yne
C) hept-3-en-6-yne
D) hept-4-en-1-yne
E) hept-2-en-4-yne