This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Acute Appendicitis, Subject name: Surgery
A 22 year old male presents with acute right lower quadrant pain in abdomen. Suspecting appendicitis a USG is done but it is equivocal. Next investigation would be- 
Select and explain. 
A. CT Scan, B. Palin Xray, C. Serum ESR, D. MRI Abdomen
A: CT Scan
Answer: A: CT Scan 
Explanation: Ans. is 'a' i.e., CT Scan o Diagnosis of appendicitis is primarily clinical, assisted by blood counts. Ultrasound and CT can be utilized to make the diagnosis in equivocal cases.o Has been explained in previous sessions