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: Surgery
All of the following are true about OPSI (Overwhelming Postsplenectomy Infection),Except: 
Select and explain. 
A. Maximum risk is within 1 year of splenectomy, B. Begins with mild appearing prodrome, C. May present with septic shock, D. Usually does not respond to antibiotic treatment
A: Maximum risk is within 1 year of splenectomy
Answer: A: Maximum risk is within 1 year of splenectomy 
Explanation: None