A nuclear reaction is given as
`A + B rarr C+ D`
Binding energies of `A,B,C,` and `D`, are given as `B_1,B_2,B_3` and `B_4`. Find the energy released in the reaction.

Explanation

To find the energy released in the nuclear reaction \( A + B \rightarrow C + D \), we will use the concept of binding energy. The energy released in a nuclear reaction can be calculated by taking the difference between the total binding energy of the products and the total binding energy of the reactants.

### Step-by-Step Solution:

1. **Identify the Binding Energies**:
- Let the binding energies of the nuclei be:
- \( B_1 \) for nucleus \( A \)
- \( B_2 \) for nucleus \( B \)
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