Which of the following statements is incorrect for sigma and $\pi$-bonds formed between two carbon atoms?

  • A
    Sigma-bond is stronger than a $\pi$-bond
  • B
    Bond energies of sigma and $\pi$-bonds are of the order of $264 \ kJ/mol$ and $347 \ kJ/mol$
  • C
    Free rotation of surrounding atoms about a sigma-bond is allowed but not in case of a $\pi$-bond
  • D
    Sigma-bond determines the direction between carbon atoms but a $\pi$-bond has no primary effect in this regard

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