Consider the Reaction (CH₃)₃CBr + CH₃CH₂OH → Experimentally One

Consider the reaction (CH₃) ₃CBr + CH₃CH₂OH → Experimentally one finds that if the concentration of (CH₃) ₃CBr is tripled, the rate of the reaction triples. One also finds that if the concentration of CH₃CH₂OH is doubled, the rate of the reaction is unchanged. Which of the following correctly describes the kinetics of this reaction?

A) The reaction is third order in (CH₃) ₃CBr.
B) The reaction is first order in CH₃CH₂OH.
C) The reaction is second order overall.
D) The reaction is first order overall.
E) none of the above