The Reaction That Occurs in a Breathalyzer, a Device Used

The reaction that occurs in a Breathalyzer, a device used to determine the alcohol level in a person's bloodstream, is given below. If the rate of appearance of Cr₂(SO₄) ₃ is 1.64 mol min^-1 at a particular moment, what is the rate of disappearance of C₂H₆O at that moment? 2K₂Cr₂O₇ + 8H₂SO₄ + 3C₂H₆O → 2Cr₂(SO₄) ₃ + 2K₂SO₄ + 11H₂O

A) 0. 547 mol min^-1
B) 1.09 mol min^-1
C) 2.46 mol min^-1
D) 4.92 mol min^-1