Statement $P$: Centrioles duplicate during the $S$ phase.
Statement $Q$: During prophase,centrioles separate from each other and move towards opposite poles of the cell.

• A
  Both Statement $P$ and $Q$ are true,but Statement $Q$ is not the correct explanation of Statement $P$.
• B
  Both Statement $P$ and $Q$ are false.
• C
  Both Statement $P$ and $Q$ are true and Statement $Q$ is the correct explanation of Statement $P$.
• D
  Statement $P$ is false and Statement $Q$ is true.