4. For each molecule of acetyl-CoA that enters the citric acid cycle, which of the following best represents the net products of the cycle? (A) 2 CO2, 2 NADH, 2 FADH2, 1 GTP, 1 oxaloacetate (B) 1 CO2, 3 NADH, 1 FADH2, 2 GTP, 1 oxaloacetate (C) 2 CO2, 3 NADH, 1 FADH2, 1 GTP, 0 oxaloacetate (D) 1 CO2, 2 NADH, 1 FADH2, 2 GTP, 0 oxaloacetate (E) 2 CO2, 3 NADH, 1 FADH2, 1 GTP, 1 oxaloacetate