Answer: D may be equal to, greater than, or less than the total amount of the reactants.
Explanation:
Is this a <span>Multiple-choice exercise</span>
The correct answers from the choices are:
a. Reduce inflammation locally
b. Antagonize H1 receptors
c. May be administered orally
<span>d. Are systemically distributed
</span><span>Antihistamines are drugs that are H1 antagonists or blockers, may be administered orally, are distributed systemically, and do not directly reduce nasal congestion.</span>
