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
The neurotransmitters; nor–adrenaline, adrenaline and dopamine act through which of the following receptors ? 
Select and explain. 
A. Single pass transmembrane receptors, B. Four pass transmembrane receptors, C. Seven pass transmembrane receptors, D. Ligand gated receptors
C: Seven pass transmembrane receptors
Answer: C: Seven pass transmembrane receptors 
Explanation: None