When 2,2-dibromobutane is heated at 200*C in the presence of molten KOH, what is the major organic product?

Question

a. but-2-yne
b. but-1-yne
c. but-1-ene
d. 1-bromobut-2-yne
e. 1-bromobut-1-yne

*I think it is "a", but I can not confirm it as correct.

Answer 1

a. but-2-yne, according to Markovnikov's rule.