Which one of the following gases possesses the largest internal energy [SCRA 1998]

• A.            2 moles of helium occupying \[1{{m}^{3}}\]at 300 K
• B.            56 kg of nitrogen at \[107N{{m}^{-2}}\] and 300 K
• C.            8 grams of oxygen at 8 atm and 300 K
• D.            \[6\times {{10}^{26}}\] molecules of argon occupying \[40{{m}^{3}}\] at 900 K