Which of the following statements is wrong?

Options

1. AEthyl chloride on reduction with $\mathrm{Zn}-\mathrm{Cu}$ couple and alcohol gives ethane.
2. BThe reaction of methyl magnesium bromide with acetone gives butanol-2.
3. CAlkyl halides follow the following reactivity sequence on reaction with alkenes. \mathrm{R}-$\mathrm{I}$>\mathrm{R}-\mathrm{Br}>\mathrm{R}-\mathrm{Cl}>\mathrm{R}-$\mathrm{I}$
4. D$\mathrm{C}_2 \mathrm{H}_4 \mathrm{Cl}_2$ may exist in two isomeric forms