[Answered]: Which of the following statements is most accurate

Which of the following statements is most accurate? Question 6 Answer a. Antihistamine agents are generally useful in the treatment of asthma. b. Antihistamines are the preferred agent in the treatment of acute anaphylaxis. c. Second-generation antihistamines have fewer anticholinergic effects than first-generation antihistamines. d. Antihistamine agents used for allergic rhinitis have antagonistic activity against both H 1 and H 2 receptors.