Compound (A) and (B) are isomers having `C_(8)H_(10)`. On oxidation (A) gives benzoic acid while (B) gives phthalic acid which forms an anhydride (C) on heating. Identify (A), (B) and (C).

Explanation

To solve the problem, we need to identify the compounds (A), (B), and (C) based on the given information. Let's break it down step by step.

### Step 1: Understanding the molecular formula
The compounds (A) and (B) have the molecular formula C₈H₁₀. This means they both contain 8 carbon atoms and 10 hydrogen atoms. Since they are isomers, they will have different structural arrangements.

**Hint:** Isomers have the same molecular formula but different structures.

### Step 2: Analyzing the oxidation products
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