The following reaction occurs in basic solution:
2 H2O(aq) + 5 MnO4–(aq) + 6 ClO–(aq) → 2 MnO2(s) + 6 ClO4–(aq) + 10 OH–(aq)
When the equation is properly balanced, what is the sum of the lowest whole-number coefficients?
a. 9
b. 10
c. 20
d. 12
e. 6