The correct statement(s) about the following reaction sequence is(are) CHCI,/NaOH Cumene (CH2); P. Q(major) +R(minor) i)0 ii) H3O+ NaOH PhCHBr Q (A) R is steam volatile (B) Q gives dark violet coloration with 1% aqueous FeCl3 solution (C) S gives yellow precipitate with 2, 4-dinitrophenylhydrazine (D) S gives dark violet coloration with 1% aqueous FeCl3 solution