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

Options

A. A sigma bond determines the direction between carbon atoms but a `pi`- bond has no primary effect in this regard.
B. A sigma bond is stronger than a `pi` bond
C. Bond energies of sigma and `pi` -bonds are of the order of `264 kJmol^(-1) and 347kJ mol^(-1)` respectively .
D. Free rotation of atoms about a sigma bond is allowed but not in case of a `pi` bond.

Answer

C