Phosphofructokinase Is Allosterically _____ by High Concentrations of _____

Phosphofructokinase is allosterically _____ by high concentrations of _____.
(I) activated;ATP
(II) inhibited;ATP
(III) inhibited;fructose-2,6-bisphosphate
(IV) activated;fructose -2,6-bisphosphate

A) I,III
B) II,III
C) II,IV
D) I,IV
E) none of the above