Notice that the HIGHER the oil:gas coefficient is, the LOWER the concentration of anesthetic is required to achieve 1 MAC (i.e. more lipid soluble = more potent).
a) More lipid-soluble anesthetics require higher concentrations for 1 MAC b) Less lipid-soluble anesthetics require higher concentrations for 1 MAC c) Higher oil:gas coefficient corresponds to higher MAC d) Higher oil:gas coefficient corresponds to lower MAC