The total number of optically active alkynes having molecular formula `C_(3)FClBrI` is

Options

A. 2
B. 4
C. 6
D. 8

Answer

4

Explanation

`Cl-underset((pm))underset(Br)underset(|)overset(F)overset(|)(C)-C equiv C-I," " Cl-underset((pm))underset(I)underset(|)overset(F)overset(|)(C)-C equiv C-Br," " Br-underset((pm))underset(I)underset(|)overset(F)overset(|)(C)-C equiv C-Cl," " Cl-underset((pm))underset(I)underset(|)overset(Br)overset(|)(C)-C equivC-F`