The Van Der Waals Constants for Methane Are a = $\circ$

The van der Waals constants for methane are a = 2.25 L² .atm/mol² and b = 0.0428 L/mol.What is the apparent temperature of 1.0000 mol CH₄ in a 10.000 L container when it is treated as real relative to the same amount of gas in an identical container at -120.00 ^$\circ$ C?

A) "-176.8 ^$\circ$ C"
B) "-93.36 ^$\circ$ C"
C) "-153.2 ^$\circ$ C"
D) "-117.9 ^$\circ$ C"
E) "-155.2 ^$\circ$ C"