Chlorine has oxidation states in its compounds that extend from $-1$ up to $+7$. What reagent(s) and conditions are required to oxidise elemental chlorine to a compound in which chlorine has the $+5$ oxidation state?
- A$\text{AgNO}_3(aq)$ followed by $\text{NH}_3(aq)$ at room temperature
- Bconcentrated $\text{H}_2\text{SO}_4$ at room temperature
- Ccold dilute $\text{NaOH}(aq)$
- Dhot concentrated $\text{NaOH}(aq)$