Assertion `(A)`: A small piece of zinc dissolves in dilute nitric acid but no hydrogen is evolved.
Reason `(R)` : `HNO_3` is an oxidising acid and oxidises hydrogen evolved to water.
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 the correct explanation of (A).
C. If (A) is correct, but (R) is incorrect.
D. If (A) is incorrect, but (R) is correct.