This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Oral and topical drug for nasal decongestion is ? 
Select and explain. 
A. Phenylephrine, B. Histamine, C. Methoxamine, D. Dopamine
A: Phenylephrine
Answer: A: Phenylephrine 
Explanation: Ans. is 'a' i.e., Phenylephrine Phenvlephrine It is selective alpha 1 agonist. Topically it is used as nasal decongestant and in eye for producing mydriasis when cycloplegia is not required. It is also a pa of oral nasal decongestant preparations.