Propene on reaction with chlorine water gives

Which of the compounds with molecular formula ${\mathrm{C}}_5{\mathrm{H}}_{10}$ yields acetone on ozonolysis ?

The major products obtained during ozonolysis of $2,3$-dimethyl-$1$-butene and subsequent reductions with $\mathrm{Zn}$ and ${\mathrm{H}}_2\mathrm{O}$ are

Among the following, the alkene on ozonolysis giving rise to only one aldehyde as the product is