⟩ Pick out the correct statement about catalytic polymerisation. A. H2SO4 polymerisation process gives gasoline rich in unsaturates. B. In H2SO4 polymerisation, H3PO4 is always used with 2% steam to prevent meta & ortho H3PO4 formation, which are inactive. C. both (a) and (b) D. neither (a) nor (b)