When `H_(2)` is added to two isomeric alkenes A and B having molecular formula `C_(5)H_(9)Cl`, A gives optically inactive compound while B gives a chiral compound. The two isomers are

Options

A. 3 - chloro -2- pentene and 1 - chloro -2- pentene
B. 4 - chloro -1- pentene and 2 - chloro -2- pentene
C. 3 - chloro -1- pentene and 4 - chloro -2- pentene
D. 1 - chloro -1- pentene and 5 - chloro -1- pentene

Answer

C