Optical activity is observed for alkynes with least no.of carbons with a alkyne having minimum(no.of carbon atoms)

Optical activity is observed for alkynes with least no.of carbons with

1.	Optical activity is observed for alkynes with least no.of carbons with a alkyne having minimum(no.of carbon atoms)
Answer» SOLUTION :`H-UNDERSET(CH_2CH_3)underset(\|)OVERSET(CH_3)overset(\|)C-C -= C-H`