Which of the following amines cannot be prepared by Gabriel phthalimide synthesis?

Which of the following reactions is appropriate for converting acetamide to methanamine?

An organic compound $A$ upon reacting with $NH_3$ gives $B$. On heating $B$ gives $C$. $C$ in presence of $KOH$ reacts with $Br_2$ to give $CH_3CH_2NH_2$. $A$ is:

Why cannot aromatic primary amines be prepared by Gabriel phthalimide synthesis?

The method by which aniline cannot be prepared is

$CH_3-COOH$ $\xrightarrow{NH_3} X$ $\xrightarrow{\Delta} Y$ $\xrightarrow{LiAlH_4} Z$; $Z$ is: