This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
A selective a1 blockers chemically distinct from prazosin used as an hypeensive agent 
Select and explain. 
A. Trimazosin, B. Tamsulosin, C. Urapidil, D. Doxazosin
C: Urapidil
Answer: C: Urapidil 
Explanation: .