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
Density of radiograph is affected by all, except: 
Select and explain. 
A. mA, B. kVp, C. Cone angulation, D. Thickness of object
C: Cone angulation
Answer: C: Cone angulation 
Explanation: Images should have optimal density and contrast to facilitate interpretation. Although milliamperage (mA), peak kilovoltage (kVp), and exposure time are crucial parameters influencing density and contrast, faulty processing can adversely affect the quality of a properly exposed radiograph.
White and Pharoah, 7th ed, pg-91