One Type of Alcohol Breathalyzer Used by Law Enforcement Involves $\rightarrow$

Multiple Choice

One type of alcohol breathalyzer used by law enforcement involves the following reaction. The amount of ethanol present is determined by a change in color of the solution. What type of reaction is this?
3CH₃CH₂OH(g) + 2K₂Cr₂O₇(aq) + 8H₂SO₄(aq) $\rightarrow$
3CH₃COOH(aq) + 2Cr₂(SO₄) ₃(aq) + 2K₂SO₄(aq) + 11H₂O

A) base ionization
B) acid ionization
C) acid-base neutralization
D) oxidation-reduction
E) dissociation