An organic compound (A) `(C_(8)H_(8)O_(3))` was insoluble in water, dilute HCI, and `NaHCO_(3)`. It was soluble in NaOH. A solution of (A) in dilute NaOH was boiled and steam distilled and distillate was reacted with NaOH to give a yellow precipitate. The alkaline residue is acidifield to give a solid (B) `(C_(7)H_(6)O_(3))`. (B) dissolves in aqueous `NaHCO_(3)` with the evolution of gas. Identify (A) and (B).

Explanation

To solve the problem, we need to identify the organic compounds (A) and (B) based on the information provided. Let's break down the steps systematically.

### Step 1: Analyze the Molecular Formula of Compound (A)
Given:
- Molecular formula of (A) = C₈H₈O₃

To determine the degree of unsaturation, we use the formula:
\[ \text{Degree of Unsaturation} = \frac{(2n_c + 2 - n_h)}{2} \]
...