Which of the following statement is correct ?

Options

A. Tetrahedral complex does not show optical isomerism
B. cis and trans isomers of `[M(A A)_(3)]^(n_(+-))` are optically active
C. `[Mabcdef]^(n_(+-))` has 15 optically active isomers
D. `[Ma_(3)b_(3)]^(n_(+-))` has two stereo isomers

Answer

D

Explanation

(a) Tetrahedral complex can show optical isomerism.
(b) `[M(A A)_(3)]n^(+-)` does not show geometrical isomerism.
(c ) `[Mabcdef]n^(+-)` has 30 optically active isomers.