An organic compound A `(C_(3)H_(5)N)` on boiling with alkali gives ammonia and sodium salt of an acid B `(C_(3)H_(6)O_(2))`. A on reduction gives `C(C_(3)H_(9)N)` which with nitrous acid gives D `(C_(3)H_(8)O)`. Give the structural formulae of A, B, C and D.

Explanation

To solve the problem, we need to identify the structures of the organic compounds A, B, C, and D based on the given information. Let's break down the steps:

### Step 1: Identify Compound A (C₃H₅N)
The molecular formula C₃H₅N suggests that compound A is likely a primary amine or an imine. Given that it reacts with alkali to produce ammonia, it is reasonable to assume that A is an amine.

**Structure of A:**
- A can be identified as propylamine (CH₃-CH₂-CH₂-NH₂) or an analogous compound.
- However, considering the reaction with alkali gives ammonia, we can deduce that A is likely to be an amino acid or an amine with a carboxylic acid group.
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