The correct option is B Anti-histamine, adrenalin, steroids
The hypersensitive response of the immune system to certain antigens present in the environment is called allergy.
The substances to which such an immune response is produced are called allergens. Common examples of allergens are mites in dust, pollens, animal dander, etc.
Symptoms of allergic reactions include sneezing, watery eyes, running nose and difficulty in breathing.
Allergic reactions are manifested due to the release of chemicals like histamine and serotonin from the mast cells. The use of drugs like anti-histamine, adrenalin and steroids quickly reduce the symptoms of allergy.