This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
The following is an activator of LCAT 
Select and explain. 
A. Apo AI, B. Apo E, C. Apo B 48, D. Apo B 100
A: Apo AI
Answer: A: Apo AI 
Explanation: .