Statement $P$: The $G_1$ phase is the final phase of interphase.
Statement $Q$: $DNA$ synthesis occurs in the $G_2$ phase.

• A
  Both statements $P$ and $Q$ are correct.
• B
  Statement $P$ is correct. Statement $Q$ is incorrect.
• C
  Statement $P$ is incorrect and statement $Q$ is correct.
• D
  Both statements $P$ and $Q$ are incorrect.