The Fischer projection of D-erythrose is shown below: CHO - -OH -OH CHOH D-Erythrose D Erythrose and its isomers are listed as P, Q, R and S in Column-I. Choose the correct relationship of P, Q, R and S with D-erythrose from Column-II. Column-I P. Q. OHC HO H OH OHC HOW R. OHC H OH S. OHC HOW (A) P 2, Q 3, R 2, S 2 (C) P 2, Q 1, R 1, S 3 -OH -OH OH H OH -OH -OH OH Column-II 1. Diastereomer 2. Identical 3. Enantiomer (B) P 3, Q 1, R 1, S 2 (D) P 2, Q 3, R 3, S 1