ß-D-Glucopyranose (ß-D-Glucose) and dissolved oxygen are converted by the enzyme glucose oxidase into D-Gluconic acid, and an inorganic byproduct. This reaction is used to measure the glucose-content in blood. What is the inorganic byproduct?
A. H2O
B. a blue dye
C. 2-methylaniline
D. H2O2