An Optically Active Compound,Y,with the Molecular Formula C₇H₁₂ gives a Positive

An optically active compound,Y,with the molecular formula C₇H₁₂ gives a positive test with cold dilute KMnO₄ and shows IR absorption at about 3300 cm^-1.On catalytic hydrogenation,Y yields Z(C₇H₁₆) and Z is also optically active.Which is a possible structure for Y?

A) CH₃CH₂CH₂CH₂CH₂C $\equiv$ CH
B) (CH₃) ₂CHCH₂CH₂C $\equiv$ CH
C) CH₃CH₂CH(CH₃) CH₂C $\equiv$ CH
D) CH₃CH₂CH(CH₃) C $\equiv$ CCH₃
E) CH₂=CHCH(CH₃) CH₂CH=CH₂