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

C. O4 formation, which are inactive</strong>

D. Both A. and B.

E. Neither A. nor B.

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