Identify A, B, C , -------- in the following.
`CH_(3)CH_(2)CH_(2)MgBr overset(NH_(3))toA underset(127^(@)C)overset(Br_(2))toB underset(ether)overset(Na)toC`

Explanation

To solve the problem step by step, we will identify the compounds A, B, and C based on the provided reactions.

### Step 1: Identify A
We start with the Grignard reagent, CH₃CH₂CH₂MgBr. When this Grignard reagent is treated with ammonia (NH₃), the nucleophilic alkyl group (CH₃CH₂CH₂-) reacts with the proton (H⁺) from ammonia. This results in the formation of a primary amine.

**Reaction:**
\[ \text{CH}_3\text{CH}_2\text{CH}_2\text{MgBr} + \text{NH}_3 \rightarrow \text{CH}_3\text{CH}_2\text{CH}_2\text{NH}_2 + \text{MgBr}^+ \]

...