Which Order of Alterations Would Most Effectively Transform Trans-2-Butene into 1-Butene

Multiple Choice

Which order of alterations would most effectively transform trans-2-butene into 1-butene?

A) convert to the dibromoalkane,then to the terminal alkyne,then to the terminal alkene
B) convert to an alcohol,then to a terminal alkyne,finally to the terminal alkene
C) convert to the terminal alkene in one step
D) shorten the chain by two carbons,then add a two-carbon alkene to the end
E) convert to an alkane,then to a terminal alkyne,and finally to a terminal alkene