${MnO}_{4}^{-} + 8 H^{+} + 5 {Fe}^{2 +} \to {Mn}^{2 +} + + 4 H_{2} O + 5 {Fe}^{3 +}$ বিক্রিয়াটিতে কোনটি জারক?(Which one is the oxidizing agent in the reaction ${MnO}_{4}^{-} + 8 H^{+} + 5 {Fe}^{2 +} \to {Mn}^{2 +} + + 4 H_{2} O + 5 {Fe}^{3 +}$ ?)

${MnO}_{4}^{-}$

$H^{+}$

${Fe}^{2 +}$