When concentrated sulfuric acid is added to solid sodium chloride, HCl is produced but not $\text{Cl}_2$. When concentrated sulfuric acid is added to solid sodium iodide, $\text{I}_2$ is produced. Which statement accounts for these observations?
- ASulfuric acid is an oxidising agent and chloride ions are more easily oxidised.
- BSulfuric acid is an oxidising agent and iodide ions are more easily oxidised.
- CSulfuric acid is a reducing agent and chloride ions are more easily reduced.
- DSulfuric acid is a reducing agent and iodide ions are more easily reduced.