Read the statements carefully and determine how many statements provide correct information.
$(1)$ In innate immunity,the cellular barrier is represented by four main types of cells.
$(2)$ The $BCG$ vaccine contains live attenuated Mycobacterium.
$(3)$ In $G-6-P$ dehydrogenase deficiency,$RBCs$ start to disintegrate (hemolysis).
$(4)$ Nicotine stimulates the adrenal gland.

• A
  Only $2$ and $4$ are correct
• B
  Only $1$ is correct
• C
  $1, 2, 3$ are correct
• D
  All statements are correct