The Total Volume of Hydrogen Gas Needed to Fill the Hindenburg

The total volume of hydrogen gas needed to fill the Hindenburg was 2.11 $\times$ 10⁸ L at 1.00 atm and 24.7°C.How much energy was evolved when it burned?

A) 8.64 $\times$ 10⁶ kJ
B) 2.98 $\times$ 10¹⁰ kJ
C) 3.02 $\times$ 10⁴ kJ
D) 2.47 $\times$ 10⁹ kJ
E) 4.94 $\times$ 10⁹ kJ