The Van Der Waals Equation of State for a Real

The van der Waals equation of state for a real gas is At what pressure will 1.00 mole of CH₄ be in a 10.0 L container at 298 K, assuming that CH₄ is a real gas?(van der Waals constants for CH₄ are a = 2.253 L² atm mol^-2, b = 0.04278 L mol^-1)

A) 2.43 atm
B) 2.28 atm
C) 2.51 atm
D) 24.5 atm
E) 0.440 atm