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: Radiology
The most sensitive investigation for air embolism is: 
Select and explain. 
A. Deceased tidal volume of CO2, B. TEE, C. Decreased tidal volume of NO2, D. Central venous pressure
B: TEE
Answer: B: TEE 
Explanation: Ans. TEE