Assertion $(A)$: $HCl$ gas is dried by passing through concentrated $H_2SO_4$.
Reason $(R)$: $HCl$ gas reacts with $NH_3$ that gives white fumes.

• A
  Both $(A)$ and $(R)$ are correct and $(R)$ is the correct explanation of $(A)$
• B
  Both $(A)$ and $(R)$ are correct and $(R)$ is not the correct explanation of $(A)$
• C
  $(A)$ is correct but $(R)$ is incorrect
• D
  $(A)$ is incorrect but $(R)$ is correct