Which of the following compounds will not undergo Friedel-Crafts reaction with benzene?

Consider the following reaction sequence:
$Cyclohexylidene-methane$ $\xrightarrow[CH_3OH]{Br_2} A$ $\xrightarrow{KCN} B$
Identify the correct structures for $A$ and $B$ from the given options:
$A$ is:
$A) \text{ 1-(bromomethyl)-1-methoxycyclohexane}$
$B) \text{ 1-(methoxymethyl)-1-bromocyclohexane}$
$B$ is:
$C) \text{ 1-(bromomethyl)-1-methoxycyclohexane}$
$D) \text{ 1-(cyanomethyl)-1-methoxycyclohexane}$

In the given reaction sequence,$(X)$ and $(Y)$ are:

$A$ haloalkane undergoes $S_{N}2$ or $S_{N}1$ reaction depending on

In which of the following reactions does an $SN^1$ reaction take place?

The major product obtained in the above reaction is