Identify A, B and C in the following reactions.
`C_6H_5NH_2 overset(Br_2,H_2O)to A underset(HCl)overset(NaNO_2)to B overset(H_3PO_2)toC`

Explanation

To solve the problem, we need to identify the compounds A, B, and C in the given reactions involving aniline (C6H5NH2).

### Step-by-Step Solution:

1. **Identify Compound A:**
- Start with aniline (C6H5NH2). The amino group (-NH2) is an electron-donating group and directs electrophilic substitution to the ortho and para positions on the benzene ring.
- When aniline reacts with bromine (Br2) in water, bromine acts as an electrophile. The amino group facilitates the substitution of bromine at the ortho and para positions.
- The product will be 2,4,6-tribromoaniline, where three bromine atoms are added to the ortho and para positions relative to the amino group.
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