This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fundamentals in Radiology, Subject name: Radiology
Radiation dose is measured in 
Select and explain. 
A. Roentgen, B. Sieve, C. Rem, D. Gray
D: Gray
Answer: D: Gray 
Explanation: Units for Radiation dose or absorbed radiation are : Traditional unit : Rad SI unit : Gray