When 3.05 moles of ch4 are mixed with 5.03 moles of o2 the limiting reactant is ch4 + 2o2 → co2 + 2h2o select one: ?

To reiterate the problem, we are asked to find which of the reactants is the limiting one. The reaction is 

CH₄ + 2 O₂ → CO₂ + 2 H₂O

We have an initial amount of 3.05 mol CH₄. Let's see how much of oxygen is required for this:
Theoretical mol O₂ required = 3.05 mol CH₄ * 2 mol O₂/1 mol CH₄ = 6.1 mol

However, the initial amount of oxygen is only 5.03 mol, which is not enough for the theoretical value. Therefore, the limiting reactant is oxygen.

The answer is the first option just took the test

Carbon based or cells?