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: Gynaecology & Obstetrics
Investigation of choice in Diabetic mother with a doubtful abnormal fetus : 
Select and explain. 
A. Sonography, B. Glycosylated haemoglobin, C. Amniocentesis, D. Chorionic villi biopsy
A: Sonography
Answer: A: Sonography 
Explanation: Sonography