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: 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 fuher test done is 
Select and explain. 
A. Chest Xray with abdominal shield, B. Ultrasound abdomen, C. Non contrast CT abdomen, D. Laproscopy
B: Ultrasound abdomen
Answer: B: Ultrasound abdomen 
Explanation: Ans is 'b' ultrasound abdomen Ultrasound is a useful diagnostic method in a pregnant female presenting with right iliac fossa pain to exclude tubal or ovarian disease. CT and X-ray should not be done for fear of radiation to the fetus.