Answer:
The correct answer is option A.
Explanation:
Sumatriptan is medication or the drug that belongs to the class of drugs called triptans. Sumatriptan affects the particular natural chemical or substance such as serotonin.
The effects on the serotonin of the sumatriptan leads to the vasoconstriction of the cranial blood vessel in the brain that help in reducing the headaches. Vasoconstriction is the narrowing of the blood vessels,
Thus, the correct answer is - option A.
I think the right answer to your is A I’m not for sure
Physician desk reference book