Carbon disulfide (CS2) undergoes a single displacement reaction with O2 to form CO2. If 100 grams of CS2 reacts with 38 grams of O2, what will the limiting reagent be?

CS2 + O2 CO2 + 2S
carbon disulfide (CS2)
carbon dioxide (CO2)
oxygen (O2)
sulfur (S)
sulfur dioxide (SO2)