Choose the correct combination of labelling the numeberof carbon compounds in the substrate molecules, involved in the citric acid cycle
A. a-4C, b-6C, c-5C, d-4C, e-4C
B. a-6C, b-5C, c-4C, d-3C, e-2C
C. a-2C, b-3C, c-4C, d-5C, e-6C
D. a-4C, b-5C, c-6C, d-4C, e-4C