(2)Where the Commission is of the opinion that the combination has, or is likely to have, an appreciable adverse effect on competition, it shall direct that the combination shall not take effect.[(3) Where the Commission is of the opinion that any appreciable adverse effect on competition that the combination has, or is likely to have, can be eliminated by modification proposed by the parties or the Commission, as the case may be, under sub-section (7) of section 29 or sub-section (2) or sub-section (3) of section 29A, it may approve the combination subject to such modifications as it thinks fit.