Given below are two statements regarding the nervous tissue of the central nervous system.
Statement $I$: The nervous tissue does not contain lymphatic vessels.
Statement $II$: $CSF$ is a lymph-like extracellular fluid secreted by the pia mater,choroid plexuses,and ependymal cells lining the ventricles of the brain and the central canal of the spinal cord.
In the light of the above statements,select the correct option given below.

• A
  Both statement $I$ and statement $II$ are correct.
• B
  Both statement $I$ and statement $II$ are incorrect.
• C
  Statement $I$ is correct but statement $II$ is incorrect.
• D
  Statement $I$ is incorrect but statement $II$ is correct.