Using the Van Der Waals Equation,the Pressure in a 22

Using the van der Waals equation,the pressure in a 22.4 L vessel containing 1.50 mol of chlorine gas at 0.00 °C is ________ atm. (a = 6.49 L²-atm/mol²,b = 0.0562 L/mol)

A) 0.993
B) 1.50
C) 0.676
D) 1.91
E) 1.48