Which product does the krebs cycle require from the electron transport chain? atp coa nad+ nadh pyruvate

The correct answer is option A and C,  i.e ATP and NAD+

Explanation:

The kerb cycle produces two molecules of ATP for each glucose molecule going through the process of glycolysis. In the glycolysis process two acetyl coenzyme A molecules are produced. Oxaloacetic acid, a four-carbon molecule, combines with acetyl coenzyme A thereby donating acetyl group to Oxaloacetic acid and forming Citric acid. Citric  acid is further oxidized by the electron carrier NAD+ which reduces to form NADH+ and H+

i think its both a and b