The major product formed in the following reaction is :

The total number of optically active compounds formed in the following reactio is :

The dipeptide, Gln-Gly, on treatment with CH₃COCl followed y aqueous work up gives :

When 2-butyne is treate with H₂/Lindlar's catalyst, compound X is produced as the major product and when treated with Na/liq. NH₃ it produces Y as the major product Which of the following statements is correct ?