When concentrated sulphuric acid is added to an inorganic mixture containing chloride, we get colourless pungent smelling gas HCl, but if the mixture contains bromide then we get red vapour of bromine. Why?

Options

1. ABromine has a higher boiling point than chlorine.
2. BSulfuric acid reacts more vigorously with bromide than with chloride.
3. CBromine is more volatile than chlorine.
4. DThe red color is a result of a chemical reaction between sulfuric acid and bromide.