A Reaction Has the Following Rate Law: Rate = K[A][B]²

Multiple Choice

A reaction has the following rate law: rate = k[A][B]²
In experiment 1, the concentrations of A and B are both 0.10 mol • L^-1; in experiment 2, the concentrations are both 0.30 mol • L^-1. If the temperature stays constant, what is the value of the ratio, rate(2) /rate(1) ?

A) 3.0
B) 6.0
C) 9.0
D) 18
E) 27