The balance sheet for ATP production in glycolysis has been given below. Select the option which correctly fills up the blanks for P,Q,R and S. ['X' stands for 'nil'].
`{:(Steps,ATP "Utilisation",ATP "Production"),(1."Glucose rarrGlucose-6-phosphate",P,X),(2."Fructose-6-phosphate" rarr "Fructose-1,6-bisphosphate",1,Q),(3.1.3-"bisphosphoglyceric acid"rarr 3-"Phosphoglyceric acid",X,R),(4.2-"Phosphenol pyuvic acid"rarr"Pyruvic acid",S,2):}`

Options

A. `{:(P,Q,R,S),(1,X,X,2):}`
B. `{:(P,Q,R,S),(1,X,2,X):}`
C. `{:(P,Q,R,S),(2,1,X,1):}`
D. `{:(P,Q,R,S),(X,1,2,X):}`

Answer

b