Given below are two statements,one is labeled as Assertion $(A)$ and other is labeled as Reason $(R).$
Assertion $(A):$ Gabriel phthalimide synthesis cannot be used to prepare aromatic primary amines.
Reason $(R) :$ Aryl halides do not undergo nucleophilic substitution reaction.
In the light of the above statements,choose the correct answer from the options given below.

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