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
X-ray was discovered by Roentgen in: 
Select and explain. 
A. 1886, B. 1902, C. 1895, D. 1907
C: 1895
Answer: C: 1895 
Explanation: Ans. 1895