Identify A and B in the given reaction.
Pyruvic acid `+CoA + NAD^(+) overset(Mg^(2+))underset("Pyruvate dehydrogenase")rarr A+B +NADH +H^(+)`
A. `{:(A,B),(PEP,CO_(2)):}`
B. `{:(A,B),("Acetyl" CoA,CO_(2)):}`
C. `{:(A,B),(CO_(2),H_(2)O):}`
D. `{:(A,B),("Acetyl" CoA,H_(2)O):}`
