Statement: In acidic medium, `Zn^(2+)` is not precipitated by `H_(2)S`.
Explanation: Common ion effect reduces the concentration of `S^(2-)` to a minimum level.
A. If both (A) and (R) are correc, and (R) is the correct explanation of (A).
B. If both (A) and (R) are correct but (R) is not the correct explanation of (A).
C. If (A) is correct, but (R) is incorrect.
D. If (A) is incorrect, but (R) is correct.