Identify the incorrect statement regarding heavy water:

Options

1. AIt reacts with $S{O}_{3}$ to form deuterated sulphuric acid $\left({D}_{2}S{O}_{4}\right)$ .
2. BIt is used as a coolant in nuclear reactors.
3. CIt reacts with $Ca{C}_{2}$ to produce ${C}_{2}{D}_{2}$ and $Ca{\left(OD\right)}_{2}$ .
4. DIt reacts with $A{l}_{4}{C}_{3}$ to produce $C{D}_{4}$ and $Al{\left(OD\right)}_{3}$ .