Given $E^{\circ }$ (V): $\mathrm{Cl}{}_2/\mathrm{Cl}{}^{-}=1.36$, $\mathrm{Br}{}_2/\mathrm{Br}{}^{-}=1.09$, $\mathrm{I}{}_2/\mathrm{I}{}^{-}=0.54$, $\mathrm{Fe}{}^{3+}/\mathrm{Fe}{}^{2+}=0.77$, $\mathrm{MnO}{}_4{}^{-}/\mathrm{Mn}{}^{2+}$ (acidic) $=1.51$. Under standard conditions, which statement(s) is/are correct?

1. A$\mathrm{Fe}{}^{3+}$ can oxidise $\mathrm{I}{}^{-}$ to $\mathrm{I}{}_2$
2. B$\mathrm{Fe}{}^{3+}$ can oxidise $\mathrm{Br}{}^{-}$ to $\mathrm{Br}{}_2$
3. CAcidified $\mathrm{MnO}{}_4{}^{-}$ can oxidise $\mathrm{Cl}{}^{-}$ to $\mathrm{Cl}{}_2$
4. D$\mathrm{Br}{}_2$ can oxidise $\mathrm{Cl}{}^{-}$ to $\mathrm{Cl}{}_2$