Complete the following reaction

Explanation

`SN^2` reaction takes place without rearrangement, since there is no formation of carbonium ion.
`SN^1 rArr` There is a formation of carbonium ion that can undergo rearrangement to give a more stable carbonium ion.

Two products are likely to be formed by `SN^1` and `El` reactions. `SN^1` path gives products `(B)`, whereas `El` path gives product `(c)`.