At the end process of glycolysis, the two pyruvates will now enter mitochondria

At the end process of glycolysis, the two pyruvates will now enter mitochondria to start the process of Krebs cycle. After using the 2 pyruvates in forming ATP, NADH, and FADH2, the third process will now start. This process is called the ? *
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a Electron Transist Change
b Electron Transport Chain
c Electron Training Chasm
d Electron Travelling Chance