Haloalkanes and Haloarenes

The correct statement regarding nucleophilic substitution reaction in a chiral alkyl halide is ;

1. Retention occurs in SN1 reaction and inversion occurs in SN2 reaction.
2. Racemisation occurs in SN1 reaction and retention occurs in SN2 reaction.
3. Racemisation occurs in both SN1 and SN2 reactions.
4. Racemisation occurs in SN1 reaction and inversion occurs in SN2 reaction.

Which among the following halide/s will not show SN1 reaction: Choose the most appropriate answer from the options given below :

1. (B) and (C) only
2. (A), (B) and (D) only
3. (B) only
4. (A) and (B) only