Select the correct answer.
The combustion reaction of propane is described by the reaction.

C3H8 + 5O2 → 4H2O + 3CO2.

How many moles of O2 are required to generate 3 moles of CO2?

A.
2.5 moles

B.
3 moles

C.
4 moles

D.
5 moles