Statement $X$: Presence of a rigid cell wall and nucleoprotein as genetic material.
Statement $Y$: Examples include $Euglena$,$Dinoflagellates$,$Amoeba$,and $Paramecium$.

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