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: Radiology
[{'content': 'All are signs /features of ectopic pregnancy on USG except \nSelect and explain. \nA. Pseudo sac, B. Hyprechoic ring, C. Adenexal mass, D. Echogenic mass with multicystic spaces within endometrial cavity', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Echogenic mass with multicystic spaces within endometrial cavity', 'role': 'assistant'}]