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
Light radiographic film is due to: 
Select and explain. 
A. Overdeveloping, B. Overfixing, C. Directly putting in fixer, D. Exposure to sunlight
B: Overfixing
Answer: B: Overfixing 
Explanation: LIGHT RADIOGRAPHS 
Processing Errors 
Underdevelopment (temperature too low; time too short; thermometer inaccurate) Depleted developer solution 
Diluted or contaminated developer 
Excessive fixation 
Underexposure 
Insufficient mA 
Insufficient kVp 
Insufficient time 
Film-source distance too great 
Film packet reversed in mouth 
DARK RADIOGRAPHS
Processing Errors 
Overdevelopment (temperature too high; time too long) 
Developer concentration too high 
Inadequate time in fixer
Accidental exposure to light 
Improper safelighting 
Storage of films without shielding, at too high a temperature, or past expiration date
Reference: White and Pharoah's Oral Radiology Principles and Interpretation 7th edition page no 80