But-2-yne react with $\mathrm { H } _ { 2 } , \mathrm { Pd } , \mathrm { BaSO } _ { 4 }$ form X and react with Na , NH 3 form Y Select corrects statements\
(1) $\mathrm { X } \& \mathrm { Y }$ are stereoisomers\
(II) X has more dipole momentum then Y\
(III) X has more B.P. then Y\
(IV) $\mathrm { X }$ \& Y will give different product with $\mathrm { O } _ { 3 }$\
(A) 1,11 \& III\
(B) II,IV \& III\
(C) I,IV \& II