Why Is Glycolysis Described as Having an Energy Investment Phase

Why is glycolysis described as having an energy investment phase and an energy payoff phase?

A) Early steps consume energy from ATP and NADH, and later steps store an equal amount of energy in ATP and NAD+.
B) Early steps consume energy from ATP and NADH, and later steps store an increased amount of energy in ATP and NADH.
C) Early steps consume energy from ATP and NADH and later steps store an increased amount of energy in ATP.
D) Early steps consume energy from ATP, and later steps store an increased amount of energy in ATP and NADH.
E) Early steps consume energy from NADH, and later steps store an increased amount of energy in ATP and NADH.