A compound (A) with molecular formula `C_4H_10O` on oxidation forms compound (B). The compound (B) gives positive iodoform test and on reaction with `CH_3MgBr` followed by hydrolysis gives (C). Identify A, B and C and give the sequence of reactions.

Explanation

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

### Step 1: Identify Compound A
Given the molecular formula \(C_4H_{10}O\), we can deduce that compound A is an alcohol since it is oxidized to form compound B.

- **Degree of Unsaturation Calculation**:
\[
\text{Degree of Unsaturation} = \frac{2C + 2 + N - H - X}{2}
...