Given below are two statements:
Statement $I$: The number of pairs among $[Al_2O_3, Cr_2O_3]$,$[Cl_2O_7, Mn_2O_7]$,$[Na_2O, V_2O_3]$ and $[CO, N_2O]$ that contain oxides of same nature (acidic,basic,neutral or amphoteric) is $4$.
Statement $II$: Among $Na_2O, Al_2O_3, CO$ and $Cl_2O_7$,the most basic and acidic oxides are $Na_2O$ and $Cl_2O_7$,respectively.

• A
  Both Statement $I$ and Statement $II$ are true
• B
  Both Statement $I$ and Statement $II$ are false
• C
  Statement $I$ is true but Statement $II$ is false
• D
  Statement $I$ is false but Statement $II$ is true