The correct sequence in the Krebs cycle is:

  • A
    Oxaloacetic acid $\rightarrow \alpha$-ketoglutaric acid $\rightarrow$ Isocitric acid
  • B
    Oxaloacetic acid $\rightarrow$ Isocitric acid $\rightarrow \alpha$-ketoglutaric acid
  • C
    $\alpha$-ketoglutaric acid $\rightarrow$ Isocitric acid $\rightarrow$ Oxaloacetic acid
  • D
    Isocitric acid $\rightarrow \alpha$-ketoglutaric acid $\rightarrow$ Oxaloacetic acid

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