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
Investigation of choice for diagnosis of spleenic rupture 
Select and explain. 
A. Peritoneal lavage, B. Ultrasound, C. CT scan, D. MRI
C: CT scan
Answer: C: CT scan 
Explanation: C i.e. CT Scan