Question 21 of 402

In this reaction, CH3CHO + HCNCH3CH(OH)CNH.OHCH3CH(OH)COOH an asymmetric centre is generated. The acid obtained would be                                                                      

(a) 50% D + 50% L-isomer

(b) 20%D + 80% L-isomer

(c) D-isomer

(d) L-isomer