Migraines are caused by changes in certain blood vessels of the brain that result in a local disturbance in the action of a specific nerve-activating chemical. Two migraine remedies, drug K and drug L, have exactly the same restorative effects on the local action of this chemical, but L also disrupts the action of several other chemicals in the brain that governmental activity and the body' s metabolism. The information above most strongly supports which one of the following hypotheses? ['K, unlike L, should be administered immediately after the onset of a migraine.', 'People whose migraines are treated with L are likely to experience a wider range of effects beyond the cessation of migraines than are people whose migraines are treated with K.', 'Treatment with L is likely to be slower-acting in its effect on a migraine than is treatment with K.', 'Neither treatment with L nor treatment with K is likely to have a significant effect on the symptoms of a migraine.']