The nursing instructor asks the student nurse to explain the action of sumatriptan.What is the student's best response?

Choice A rationaleSumatriptan does not cause vasodilation of peripheral blood vessels. Instead, it has vasoconstrictive properties.Choice B rationaleSumatriptan does not depress pain response in the central nervous system. Its primary action is on the cranial blood vessels.Choice C rationaleSumatriptan is a selective serotonin receptor agonist that causes vasoconstriction of cranial blood vessels, relieving migraine headaches.Choice D rationaleSumatriptan does not bind to acetylcholine receptors or prevent nerve transmission. It specifically targets serotonin receptors in cranial blood vessels.