Statement $P$: Monosaccharides can pass through the cell membrane.
Statement $Q$: Monosaccharides are the simplest carbohydrates.

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