A Nurse Is Teaching a Group of Nursing Students About

A nurse is teaching a group of nursing students about antihistamines. Which statement by a student indicates an understanding of the mechanism of action of the antihistamines?

A) "Antihistamines block H₁ receptors to prevent actions of histamine at these sites."
B) "Antihistamines block release of histamine from mast cells and basophils."
C) "H₁ antagonists can bind to H₁ receptors, H₂ receptors, and muscarinic receptors."
D) "First-generation antihistamines are more selective than second-generation antihistamines."