Fructokinase is necessary for production of: (A) Fructose-1-PO4, (B) Fructose 1, 6 diphosphate, (C) Fructose 6 phosphate, (D) Glyceraldehyde
Answer is A. Fructose-1-PO4 

Fructokinase is necessary for the production of fructose- 1 -phosphate from fructose.