The newest protein powder on the market advertises "increased energy production". Upon reading the label you notice that, rather than a mix of amino acids, the powder contains only valine. How would consuming an excess amount of this protein powder affect the citric acid cycle in the liver?
A. The rate of reactions in the citric acid cycle would speed up.
B. No effect, amino acids do not regulate the citric acid cycle.
C. The rate of reactions in the citric acid cycle would slow down.