【单选题】According to the speaker, why would thermography be non-threatening to patients 
                    
A.It is not painful.
B.Patients can see the pictures.
C.The process is very relaxing.
D.No radiation is involved.
                
							【单选题】According to the speaker, why would thermography be non-threatening to patients 
                    
A.It is not painful.
B.Patients can see the pictures.
C.The process is very relaxing.
D.No radiation is involved.
                
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