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
Thyroid dose for panoramic radiograph is: 
Select and explain. 
A. 0.94 mGy, B. 0.074 mGy, C. 0.074 microGy, D. 0.74 mGy
B: 0.074 mGy
Answer: B: 0.074 mGy 
Explanation: Thyroid dose for panoramic radiograph is 0.074 mGy.
White and Pharoah 5th ed pg -234