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
Type of circuit use in a child of age 5 yrs for anesthesia is? 
Select and explain. 
A. Jackson Rees modification of Ayre's T piece, B. Mapleson A or Magill's circuit, C. Mapleson C or water's to & fro canister, D. Bain's circuit
A: Jackson Rees modification of Ayre's T piece
Answer: A: Jackson Rees modification of Ayre's T piece 
Explanation: Ans is 'a' i.e. Jackson Rees modification of Ayre's T piece * Circuit of choice for spontaneous ventilation in adult - Mapleson A (Magill circuit)* Circuit of choice for controlled ventilation in adult - Mapleson D (Bain circuit)* Circuit of choice for children - Type F, i.e. Jackson-Rees (first choice) and type E, i.e. Ayre's T piece (second choice)* Co-axial systems Mapelson C (Waters to & fro)