When the following oxidation-reduction reaction in basic solution is balanced, what is the lowest whole-number coefficient or OH-, and on which side of the balanced equation should it appear?
Cr2O3(s) -> Cr(OH)2(aq) + CrO4^2-(aq)
A) 2, product side
B) 2, reactant side
C) 4, product side
D) 4, reactant side
E) 10, product side