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
Why an increased target-film distance is required in the paralleling techniques? 
Select and explain. 
A. To avoid image magnification, B. To avoid distortion, C. To reduce scattered radiation, D. To improve film placement
B: To avoid distortion
Answer: B: To avoid distortion 
Explanation: None