What Is the Coefficient of O₂ When the Following Equation

What is the coefficient of O₂ when the following equation is properly balanced with the smallest set of whole numbers? ________ CH₃OH + ________ O₂ → ________ CO₂ + ________ H₂O

A) 1
B) 2
C) 3
D) 7
E) None of these answers is correct.