Choose the incorrect statement from the following options.

a$)$ In bonding molecular orbital, electron density is low in the region between the nuclei of bonded atoms

b$)$ The energy of antibonding molecular orbital is higher than that of atomic orbitals from which it is formed

c$)$ Every electron in bonding molecular orbital contributes toward stability of the molecule

d$)$ Antibonding takes place when lobes of atomic orbitals have different signs