$ \text { a } \mathrm{Cl}_2(\mathrm{~g})+\mathrm{b} \mathrm{OH}^{-}(\mathrm{aq}) \rightarrow \mathrm{c} \mathrm{ClO}^{-}(\mathrm{aq})+\mathrm{d} \mathrm{Cl}^{-}(\mathrm{aq}) +\mathrm{e} \mathrm{H}_2 \mathrm{O}(l)$
The values of $a, \ b,\ c$ and $d$ in a balanced redox reaction are respectively :
- ✓$1$, $2$, $1$ and $1$
- B$2$, $2$, $1$ and $3$
- C$3$,$4$,$4$ and $2$
- D$2$, $4$, $1$ and $3$

