Given below are two statements: Statement I: The number of pairs among [ Al_2 O_3, Cr_2 O_3],[ Cl_2 O_7, Mn_2 O_7],[ Na_2 O, V_2 O_3] and [ CO, N_2 O…

Given below are two statements : Statement I : The number of pairs among $\displaystyle \left[\mathrm{Al}_2 \mathrm{O}_3, \mathrm{Cr}_2 \mathrm{O}_3\right],\left[\mathrm{Cl}_2 \mathrm{O}_7, \mathrm{Mn}_2 \mathrm{O}_7\right],\left[\mathrm{Na}_2 \mathrm{O}, \mathrm{V}_2 \mathrm{O}_3\right]$ and $\displaystyle \left[\mathrm{CO}, \mathrm{N}_2 \mathrm{O}\right]$ that contain oxides of same nature (acidic, basic, neutral or amphoteric) is 4. Statement II : Among $\displaystyle \mathrm{Na}_2 \mathrm{O}, \mathrm{Al}_2 \mathrm{O}_3, \mathrm{CO}$ and $\displaystyle \mathrm{Cl}_2 \mathrm{O}_7$, the most basic and acidic oxides are $\displaystyle \mathrm{Na}_2 \mathrm{O}$ and $\displaystyle \mathrm{Cl}_2 \mathrm{O}_7$, respectively. In the light of the above statements, choose the correct answer from the options given below :