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-5C,C-6C, D-4C, E-4C
D. `A-4C, B-6C, C-4C, D-4C, E-4C
