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
The most appropriate circuit for ventilating a spontaneously breathing infant - 
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: Ayre&;s T piece is used in infants. The patient inspires fresh gas from the reservoir tube,expires into the reservoir tube. Advantages are they are inexpensive,compact,no valves and low dead space