Given below are two statements :
Statement I: In the course of respiration, the three carbon pyruvate molecules are broken down within the mitochondrion to two carbon acetyl groups.
Statement II: The Kreb's cycle begins with acetyl CoA and each acetyl group is oxidized in a series of reactions to yield two additional molecules of CO2, one molecule of ATP, three molecules of NADH and one molecule of FADH2.
In the light of the above statements, choose the most appropriate answer from the options given below :