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
Snow Storm" appearance is seen in: 
Select and explain. 
A. Ectopic pregnancy, B. H mole, C. Leiomyoma uterus, D. Abdominal pregnancy
B: H mole
Answer: B: H mole 
Explanation: H mole