Which of the following statements is true? (A) Oxidation is the gain of electrons; reduction is the loss of electrons. (B) Glucose is a product of aerobic respiration; lactic acid is a product of anaerobic respiration. (C) Lactic acid is a product of aerobic respiration; ethyl alcohol is a product of fermentation. (D) Oxygen is a product of cellular respiration; carbon dioxide is a product of photosynthesis. (E) Oxidation is the loss of electrons; reduction is the gain of electrons.