Step 1: Analyze the reaction sequence.
In this reaction, \( A \) undergoes a bromination and subsequent hydrogenation. The final product, X, is likely to be a methylated benzene.
Step 2: Conclusion.
Thus, the product is \( \text{C}_6\text{H}_5\text{CH}_3 \).
Final Answer:
\[
\boxed{\text{C}_6\text{H}_5\text{CH}_3}
\]