This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gluconeogenesis, Subject name: Biochemistry
All of the following are true about fructose-1-6-bisphosphatase, EXCEPT:- 
Select and explain. 
A. Key gluconeogenic enzyme, B. Fructose-2,6, bisphosphate is an allosteric activator of this enzyme, C. Catalyses the hydrolysis reaction, D. Requires magnesium for the catalysis
B: Fructose-2,6, bisphosphate is an allosteric activator of this enzyme
Answer: B: Fructose-2,6, bisphosphate is an allosteric activator of this enzyme 
Explanation: Fructose 1,6 bisphosphatase reverses the PFK-1 reaction. So, it is a key-gluconeogenic enzyme- option 1 is true. Reaction catalysed is a hydrolysis reaction- option 3 is true Option 4-Requires magnesium for the catalysis Fructose-2,6, bisphosphate is potent allosteric activator of PFK-1 and inhibitor of fructose-1-6-bisphosphatase (option 2 is false).