When acidified dichromate(VI) ions, $\text{Cr}_2\text{O}_7^{2-}$, react with aqueous $\text{Fe}^{2+}$ ions, the dichromate(VI) ions are reduced to $\text{Cr}^{3+}$ ions. Which equation correctly represents this reaction?
- A$ ext{Cr}_2 ext{O}_7^{2-} + ext{Fe}^{2+} + 14 ext{H}^+ ightarrow 2 ext{Cr}^{3+} + ext{Fe}^{3+} + 7 ext{H}_2 ext{O}$
- B$ ext{Cr}_2 ext{O}_7^{2-} + 2 ext{Fe}^{2+} + 14 ext{H}^+ ightarrow 2 ext{Cr}^{3+} + 2 ext{Fe}^{3+} + 7 ext{H}_2 ext{O}$
- C$ ext{Cr}_2 ext{O}_7^{2-} + 3 ext{Fe}^{2+} + 14 ext{H}^+ ightarrow 2 ext{Cr}^{3+} + 3 ext{Fe}^{3+} + 7 ext{H}_2 ext{O}$
- D$ ext{Cr}_2 ext{O}_7^{2-} + 6 ext{Fe}^{2+} + 14 ext{H}^+ ightarrow 2 ext{Cr}^{3+} + 6 ext{Fe}^{3+} + 7 ext{H}_2 ext{O}$