Which of the following identifies net production when 1 mol of fructose-1,6-bisphosphate is converted to 2 mol of lactate? Assume that re-oxidation of NADH via the electron transport chain yields the equivalent of 3 ATP, and that re-oxidation of FADH2 yields 2 ATP.

a. 2 mol of ATP

b. 4 mol of ATP

c. 2 mol of ATP + 2 mol of NADH

d. 4 mol of ATP + 2 mol of NADH