The question asks for the major products $A$ and $B$ in a reaction sequence, but the actual reaction scheme/structure is missing from the prompt.

Only this text is available:

$\text{In the following series of reactions identify the major products } A \& B \text{ respectively}$

and the options are listed merely as:

• A:
• B:
• C:
• D:

with no structures shown.

Why the problem cannot be solved as given

To determine products in haloalkanes/haloarenes reactions, we must know:

1. The starting compound(s)
2. The reagents and conditions in each step
3. The actual answer options (structures of products)

Since none of these are visible, the major products cannot be derived logically from the provided text alone.

Comparison with stored answer

The stored correct answer is given as B, but because the reaction sequence and options are absent, I cannot independently verify whether option B is actually correct.

Conclusion

The question is incomplete. Please provide the reaction sequence image or text and the option structures so I can solve it step-by-step and verify the answer properly.