What are the corrections made to the pressure and volume of real gases compared to ideal gases?

• A
  Pressure correction = $an^2/V^2$,Volume correction = $nb$
• B
  Pressure correction = $nb$,Volume correction = $an^2/V^2$
• C
  Pressure correction = $n^2/aV^2$,Volume correction = $b/n$
• D
  Pressure correction = $a/V^2$,Volume correction = $n/b$