In the following reaction, cho h-oh ch,oh &glyceraldhyde the absolute configurations of the chiral centres in x and y are hcn x+y (diastereomers) (a) 2s, 3r and

In the following reaction, CHO H-OH CH,OH &glyceraldhyde the absolute configurations of the chiral centres in X and Y are HCN X+Y (Diastereomers) (a) 2S, 3R and 2R, 3R () 25, 3S and 2R, 3R (b) 2R, 3R and 2R, 3S (d) 25, 3R and 25, 3R