The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Antihistamines
are a type of medicine often used to treat a number of allergic health
conditions. Antihistamines also have a number of other uses, such as treating
stomach ulcers, insomnia (problems falling asleep) and motion sickness.
Ranitidine is in a group of drugs called histamine-2 blockers.
Ranitidine works by reducing the amount of acid your stomach produces.
Brompheniramine
(Bromfed, Dimetapp, Bromfenex, Dimetane, BPN, Lodrane), commonly marketed as
its salt brompheniramine maleate, is an antihistamine drug of the propylamine
(alkylamine) class.
So Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
Hence option B is correct.