The products formed when Aniline reacts with $B{r}_2$ water, and $NaN{O}_2/HCl$ will be, respectively:

Which chemical reaction leads to the formation of isocyanide?

1. Reimer Tiemann reaction.
2. Carbylamine reaction.
3. Hoffmann bromamide reaction.
4. None of the above.

D is N-methyl aniline in the given below sequence of reaction. 
\(\text A\xrightarrow{\bf\text{ reduction }}\text B\xrightarrow{\bf\text {CHCl}_3\text{/KOH}}\text C\xrightarrow{\bf\text{ reduction }}\text D\)

structure of A can be:

1.		2.
3.	CH3NH2	4.

The final product C, obtained in this reaction, would be:

1.		2.
3.		4.