Which of the following statements is $NOT$ true regarding the sigma and pi bonds formed between two carbon atoms?
- AThe sigma bond determines the direction of the bond between carbon atoms,but the pi bond has no primary effect on this.
- BThe sigma bond is weaker than the pi bond.
- CThe bond energies of the sigma bond and pi bond are $264 \ kJ/mol$ and $347 \ kJ/mol$ respectively.
- DFree rotation of atoms around a sigma bond is possible,but it is not possible in the case of a pi bond.
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