The major product formed in the oxidation of acetylene by alkaline ${\mathrm{KMnO}}_4$ is

 $\mathrm{X}$ may not be?

${\left({\mathrm{CH}}_3\right)}_2\mathrm{CH}-{\mathrm{CH}}_2{\mathrm{CH}}_3\stackrel{{\mathrm{Cl}}_2/\mathrm{h\nu }}{⟶}\left[\mathrm{N}\right]\frac{\text{ Fractional }}{\text{ distillation }}\left[\mathrm{P}\right]$ The number of possible isomers $\left[\mathrm{N}\right]$ and number of fractions $\left[\mathrm{P}\right]$ are:

The compound shown below

can be readily prepared by Friedel-Crafts reaction between