Which of the following statements is not correct for sigma- and pi- bonds formed between two carbon atoms :

Question

( A ) Bond energies of sigma- and pi-bonds are of the order of 264 KJ/mol and 347 KJ/mol, respectively
( B ) Sigma-bond is stronger than a pi-bond
( C ) Free rotation of 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