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 male was brought unconscious to the hospital with external injuries. CT shows no midline shift, but basal cisterns were full (compressed) with multiple small haemorrhage. The most probable diagnosis is: 
Select and explain. 
A. Brain contusion, B. Diffuse axonal injury, C. Subdural hemorrhage, D. Multiple infarct
B: Diffuse axonal injury
Answer: B: Diffuse axonal injury 
Explanation: B i.e. Diffuse axonal injuries Diffuse axonal injuries (DAI) - shearing injuries caused by sudden rotational or accelerating / decelerating forces. Patient typically lose consciousness at the time of impactQ. On CT small petechial hemorrhages are seenQ