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
Carman's meniscus sign is seen in 
Select and explain. 
A. Benign Gastric ulcer, B. Malignant Gastric ulcer, C. Both, D. Intestinal obstruction
B: Malignant Gastric ulcer
Answer: B: Malignant Gastric ulcer 
Explanation: Benign ulcer - Hampton's ulcer.
Malignant ulcer - Carman's Meniscus sign.