This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
Fructokinase is necessary for: 
Select and explain. 
A. Fructose-1-PO4, B. Ructose 1,6 diphosp hate, C. Fructose 6 phosphate, D. Glyceraldehyde
A: Fructose-1-PO4
Answer: A: Fructose-1-PO4 
Explanation: A i.e. Fructose -1- PO4