Interhalogens hydrolyse as $\mathrm{X}{\mathrm{X}}^{\prime }+\mathrm{H}{}_2\mathrm{O}\to \mathrm{H}{\mathrm{X}}^{\prime }+\mathrm{HOX}$, where X is the less electronegative halogen. ClF, BrF and ICl are hydrolysed. The order of increasing acid strength of the oxoacid released is

1. A$\mathrm{ClF}<\mathrm{BrF}<\mathrm{ICl}$
2. B$\mathrm{BrF}<\mathrm{ICl}<\mathrm{ClF}$
3. C$\mathrm{ICl}<\mathrm{BrF}<\mathrm{ClF}$
4. D$\mathrm{ICl}<\mathrm{ClF}<\mathrm{BrF}$