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 a patient having dense bones, penetration is best
achieved by: 
Select and explain. 
A. Increase in mA, B. Increase in kVp, C. Increased exposure time, D. Increased developing time
B: Increase in kVp
Answer: B: Increase in kVp 
Explanation: None