Step 1: Nucleophilic Substitution with HI.
In this reaction, anisole undergoes nucleophilic substitution with HI. The methoxy group (\( \text{-OCH}_3 \)) is substituted by the iodine atom, forming \( \text{C}_6\text{H}_5\text{OH} \) (phenol) and \( \text{CH}_3 \text{I} \) (methyl iodide).
Step 2: Conclusion.
The correct answer is (A), as the products are phenol and methyl iodide.