Chlorine Dioxide Reacts in Basic Water to Form Chlorite and Chlorate

Chlorine dioxide reacts in basic water to form chlorite and chlorate according to the following chemical equation:
2ClO₂(aq) + 2OH^-(aq) $\rarr$ ClO₂^-(aq) + ClO₃^-(aq) + H₂O(l)
A kinetic study of this reaction under a certain set of conditions yielded the data below.
Which one of the following is the rate law for this reaction?

A) rate = k[ClO₂][OH^-]
B) rate = k[ClO₂]²[OH^-]
C) rate = k[ClO₂][OH^-]²
D) rate = k[ClO₂]²[OH^-]²
E) rate = k[ClO₂]⁴[OH^-]