This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Radiology Q Bank, Subject name: Radiology
[{'content': 'Snowstorm appearance on ultrasonogrpahy is seen in- \nSelect and explain. \nA. Hydatid cyst, B. Pyogenic liver abscess, C. Ectopic pregnancy, D. Molar pregnancy', 'role': 'user'}, {'content': 'Answer: D \nExplanation: * Hydatid cyst - shows Water lily sign or camalotte sign * Ectopic pregnancy - Shows Ring of fire appearance * Molar pregnancy - shows Snowstorm appearance * Snowstorm sign: Complete hydatiform mole (USG) * Snowstorm sign: Extracapsular breast implant rupture (USG) * Snowstorm sign: Thyroid pulmonary metastases (Chest radiograph) * Snowstorm sign Ascites-meconium peritonitis', 'role': 'assistant'}]