Regulation of glycolysis

What is the primary function of PFK-2 during glycolysis?

1: It catalyzes the conversion of F6P to F2,6BP in the presence of ATP.
2: It removes a phosphate group from F2,6BP with the help of ATP.
3: It uses ATP to produce F1,6BP and activates FBPase-1.
4: It catalyzes the conversion of glucose-6-phosphate (G6P) into two molecules of pyruvate in the presence of NADH and FADH2.