Given below are two statements,one is labeled as Assertion $(A)$ and the other is labeled as Reason $(R)$.
Assertion $(A)$: $CH_2=CH-CH_2-Cl$ is an example of an allyl halide.
Reason $(R)$: Allyl halides are the compounds in which the halogen atom is attached to an $sp^3$ hybridized carbon atom,which is adjacent to a carbon-carbon double bond.
In the light of the two above statements,choose the most appropriate answer from the options given below:

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