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: Medicine
Which is the most frequently involved aery in acute pancreatitis leading to pseudoaneurysm? 
Select and explain. 
A. Splenic aery, B. Superior pancreatico duodenal aery, C. Inferior pancreaticoduodenal aery, D. Gastroduodenal aery
A: Splenic aery
Answer: A: Splenic aery 
Explanation: Pseudoaneurysms develop in up to 10% of patients with acute pancreatitis. The splenic aery is most frequently involved. Reference: Harrisons Principles of Internal Medicine, 18th Edition, Page 2642