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
In MRI the field used is 
Select and explain. 
A. 0.05 tesla, B. 100 tesla, C. 1.1 tesla, D. 11 tesla
C: 1.1 tesla
Answer: C: 1.1 tesla 
Explanation: MR scans are obtained by placing the patient in a static magnetic field of 0.02 to 4 tesla (T) strength.