A 150 mL agua oxygenada solution is found to contain 0.75 mL hydrogen peroxide, 2.55 mL lactic acid, 0.75 mL dodecyl benzene sulfonic acid and 145.95 mL of inert ingredients.

___ 20. What is the percent by volume of lactic acid?
A. 0.5 %
B. 1.7 %
C. 3.6 %
D. 97.3 %​