Which of the following is chiral as well optically active?

Options

A. `Me - NH-Et`
B. cis`-`cyclooctene
C.
D. `Et.overset(cdot)CHMe`

Answer

C

Explanation

(A) `-` Chiral bur optically inactive due to rapid inverion.
(B) `-` Achiral
(C ) `-` Sulphur has lone pair also and no inversion occurs.
(D) `-` Planar and inversion occurs rapidly.