Arrange the following compounds in decreasing order of number of alkene isomers that could be produced by the reaction of each of the following with boiling solution of ethanolic KOH
I. 1-bromobutane
II. 3-bromopentane
III. 3-bromo-3-methylpentane
IV. 3-bromohexane
A. `I gt II gt III gtIV`
B. `IV gt III gt I gt II`
C. `IV gt III gt II gt I`
D. `III gt IV gt II gt I`
