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
Sympathomimietic causing increase in mean blood pressure, hea rate and cardiac output on intravenous infusion is? 
Select and explain. 
A. Adrenaline, B. Isoprenaline, C. Norepinephrine, D. Phenylephrine
A: Adrenaline
Answer: A: Adrenaline 
Explanation: Ans. is 'a' i.e., Adrenaline