Considering the Limiting Reactant,what Is the Volume of the Excess

Multiple Choice

Considering the limiting reactant,what is the volume of the excess reactant that remains after the reaction of 25.0 mL of methane gas and 75.0 mL of oxygen gas? (Assume constant conditions. ) CH₄(g) + 2 O₂(g) → CO₂(g) + 2 H₂O(g)

A) 12.5 mL CH₄
B) 25.0 mL CH₄
C) 25.0 mL O₂
D) 50.0 mL O₂
E) none of the above