Which of the following is accurate about the treatment of migraines?

A、Theresultsofnonpharmacologicmanagementresultsaresimilartothoseofpreventivedruguseintermsofaveragereductionofmigraines
B、Dailyuseoftriptansforaslongas3-4weeksisindicatedinpatientswithseveremigraines
C、Subcutaneoussumatriptanispreferredtoacombinationofintravenousantiemeticsanddiphenhydramineinemergencypatients
D、Tricyclicantidepressantsaremostoftenthefirst-lineagentsusedformigraineprophylaxis