The linear combination of atomic orbitals to form molecular orbitals takes place only when the combining atomic orbitals

$A$. have the same energy

$B$. have the minimum overlap

$C$. have same symmetry about the molecular axis

$D$. have different symmetry about the molecular axis

Choose the most appropriate from the options given below:

• A

  $A, B, C$ only

• B

  $A$ and $C$ only

• C

  $B, C, D$ only

• D

  $B$ and $D$ only