`(-)2`- methylbutan- `1` - ol on heating with conc. HCl gives `(+)1`- chloro - `2` - methylbutane by `SN^(2)` mechanism. Which of the following statement are correct
i) reaction proceeds through retension of configuration at stereocentre
ii) reaction proceeds through inversion of configuration at stereocentre
iii) reaction proceeds directly through a transition state
iv) reaction proceeds through carbocation intermediate

Options

A. i and iii
B. i and iv
C. ii and iii
D. i, iii and iv