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
Which of the following drugs has no cycloplegic action ? 
Select and explain. 
A. Atropine, B. Cyclopentolate, C. Tropicamide, D. Phenylepherine
D: Phenylepherine
Answer: D: Phenylepherine 
Explanation: None