Which of the following compounds will give racemic mixture on nucleophilic substitution by `OH^(-)` ion ?
(i) `CH_(2)-underset(C_(2)H_(5))underset("| ")("C ")H-Br`
`CH_(3)-overset("Br ")overset("| ")underset(C_(2)H_(5))underset("| ")("C ")-CH_(3)`
(iii) `CH_(2)-underset(C_(2)H_(5))underset("| ")("C ")H-CH_(2)Br`

Options

A. (i)
B. (i),(ii) and (iii)
C. (ii) and (iii)
D. (i) and (ii)

Answer

A

Explanation

In `S_(N)1` reaction, the recemisation takes place if a substrate (alkylhalide) is chiral.