In the reaction scheme shown below, Q, R and S are the major products. H3C H3C CH3 H3C CH3 P (C) Ris The correct structure of (A) Sis H3C H3C AICI3 H3CX H3C CH3 (i) Zn-Hg/HCI (ii) H3PO4 H3C CH3 CH3 CH3CH3 R () (1) CH3MgBr (ii) H30+ (iii) H2SO4/ Qis (D) Sis H3C S H3C H3C H3C HOC H3C CH3 CH3 H3CCH3 H3C CH3