Given below are two statements, one labeled as Assertion (A) and the other labeled as Reason (R). **Assertion (A):** Sulfide ores are concentrated by the froth flotation process. **Reason (R):** Pine oil selectively wets the gangue particles, while water wets the sulfide ore particles. Select the correct answer using the codes given below:

Options:

• A: Both A and R are true, and R is the correct explanation of A.
• B: Both A and R are true, but R is not the correct explanation of A.
• C: A is true, but R is false.
• D: A is false, but R is true.

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