24. The standard reduction potentials are as follows: \( MnO_4^- + 8H^+ + 5e^- \rightarrow Mn^{2+} + 4H_2O \) \( E^\circ = 1.51 \) V \( Cr_2O_7^{2-} + 14H^+ + 6e^- \rightarrow 2Cr^{3+} + 7H_2O \) \( E^\circ = 1.33 \) V How many electrons are transferred in the balanced reaction (that is, what will be the value of n in the Nernst equation)? (A) 5 (B) 6 (C) 12 (D) 30 (E) 36