The mechanism followed when the alcoholes given below reacts with conc. HCl/anhydrous `ZnCl_(2)`
`underset("(I)")(CH_(3)OH)," "underset("(II)")(CH_(3)CH_(2)OH)," "underset("(III)")(CH_(3)underset(OH)underset("| ")"CH"CH_(3))`

Options

A. `S_(N)1,S_(N)2, S_(N)2`
B. `S_(N)2, S_(N)2, S_(N)1`
C. `S_(N)2, S_(N)1, S_(N)1`
D. `S_(N)1, S_(N)1, S_(N)2`

Answer

B

Explanation

`1^(@)` alcohol react with `S_(N)2` mechanism while `2^(@) and 3^(@)` alcohol tend to react by `S_(N)2` mechanism `S_(N)1` mechanism, respectively.