Which statement is an accurate comparison of energy-yielding processes? a.) Oxygen is a product of cellular respiration; carbon dioxide is a product of photosynthesis. b.) Oxidation is the gain of electrons; reduction is the loss of electrons. c.) Lactic acid is a product of aerobic respiration; ethyl alcohol is a product of fermentation. d.)Carbon dioxide is a product of aerobic respiration; lactic acid is a product of anaerobic respiration.