This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anaesthetic equipments, Subject name: Anaesthesia
Bains' circuit is Mapelson type - circuit - 
Select and explain. 
A. Type A, B. Type B, C. Type D, D. Type E
C: Type D
Answer: C: Type D 
Explanation: Type A - Magills circuit Type C - Water,'s (to and from) circuit Type D - Bain's circuit Type E - Sure's T piece Type F -Jackson-Rees circuit.