$21.$ a$)$ Create a flow chart, using text, to summarize the ATP, FADH production in the citric acid cycle $($stage $3$ of respiration$),$ starting with two acetylCoA molecules. Include the number of carbons found at each stage after the two acetyl$-$CoA molecules. $(10$ marks$)$

b$)$ Based on your flow chart, what is the total production of ATP, NADH, and FADH in this cycle? $(3$ marks$)$