(A) `HClO_(4)` is stronger acid than `HClO_(3)`.
(R ) Oxidation state of Cl in `HClO_(4)` is +VII and in `HClO_(3)`, it is+V.
A. If both (A) and (R) are correct and (R) is the correct explanation of (A).
B. If both (A) and (R) are correct but (R) is not correct explanation of (A).
C. If (A) is correct but (R) is incorrect.
D. If (A) is incorrect but (R) is correct.