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
A radiographic film too dark and fogged could be because of: 
Select and explain. 
A. Increased exposure time, B. Thin patient tissues, C. Poor film storage, D. High developer concentration
C: Poor film storage
Answer: C: Poor film storage 
Explanation: None