What is the first place in the breakdown of glucose, starting in glycolysis and through the Krebs cycle, where CO\({}{2}\) is released:

W) pyruvate yielding Acetyl Co-A

X) 3-phosphoglycerate (read as: 3-foss-foe-GLISS-err-ate) yielding 2-phosphoglycerate

Y) isocitrate yielding alpha ketogluterate

Z) oxaloacetate (read as: ox-AL-oh-ACETATE) yielding citrate
W) PYRUVATE YIELDING ACETYL Co-A