Identify the incorrect statement from the following:

Options

1. AThe acidic strength of $\mathrm{HX}(X=\mathrm{F}, \mathrm{Cl}, \mathrm{Br}$ and I$)$ follows the order: $\mathrm{HF}\gt\mathrm{HCl}\gt\mathrm{HBr}\gt\mathrm{HI}$.
2. BFluorine exhibits -1 oxidation state whereas other halogens exhibit $+1,+3,+5$ and +7 oxidation states also.
3. CThe enthalpy of dissociation of $\mathrm{F}_2$ is smaller than that of $\mathrm{Cl}_2$.
4. DFluorine is stronger oxidising agent than chlorine.