Assertion $(A)$: Chlorobenzene is not formed in the reaction of phenol with thionyl chloride.
Reason $(R)$: In phenol,the carbon-oxygen bond has partial double bond character.
The correct answer is

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