This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urinary Tract, Subject name: Surgery
A pregnant female presents with pain in abdomen on examination, tenderness is found in right lumbar region. TLC is 12000/cmm. and urine examination is normal.For diagnosis further test done is --> 
Select and explain. 
A. Chest Xray with abdominal shield, B. ultrasound abdomin, C. Non contrast CT abdomin, D. Laproscopy
B: ultrasound abdomin
Answer: B: ultrasound abdomin 
Explanation: Ans. is 'b' ultrasound abdomen [Ref Love & Bailey 24/e p. 1211 (23rd/e p. 1084)Ultrasound is a useful diagnostic method in a pregnant female presenting with right iliac fossa pain to exclude tubal or ovarian disease