What ‘A’ and ‘B’ indicates in the given figure (reaction)?

1.	What ‘A’ and ‘B’ indicates in the given figure (reaction)?
A.	A= ES complex B=S
B.	A=S B=E
C.	A= ES complex B=E
D.	A= EP complex, B=E
Answer» D. A= EP complex, B=E

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