Identify the product $B$ in the following sequence of reaction: $CH_3MgBr$ $\xrightarrow{CdCl_2} A$ $\xrightarrow{CH_3COCl} B$

Which of the following compounds gives a ketone with a Grignard reagent?

Identify the final product $A$ in the given reaction sequence.

What is $Z$ in the following reaction sequence?
$C_6H_5NH_2$ $\xrightarrow[(i) NaNO_2 + HCl / 273 \ K]{(ii) H_3PO_2 + H_2O}$ $\xrightarrow[(iii) CO, HCl, \text{anhydrous } AlCl_3/CuCl]{} Z$

Match List-$I$ with List-$II$:

List-$I$	List-$II$
$A$. $RCN \xrightarrow[(ii) H_3O^+]{(i) SnCl_2, HCl} RCHO$	$I$. Etard reaction
$B$. $C_6H_5COCl \xrightarrow{H_2, Pd-BaSO_4} C_6H_5CHO$	$II$. Gatterman-Koch reaction
$C$. $C_6H_5CH_3 \xrightarrow[(ii) H_3O^+]{(i) CrO_2Cl_2, CS_2} C_6H_5CHO$	$III$. Rosenmund reduction
$D$. $C_6H_6 \xrightarrow[(ii) \text{anhydrous } AlCl_3/CuCl]{(i) CO, HCl} C_6H_5CHO$	$IV$. Stephen reaction

Choose the correct answer from the options given below:

$R-CN \xrightarrow[(ii) H_3O^{+}]{(i) SnCl_2 + HCl} R-CHO$
What is the name of the above reaction?