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: Unknown
Gilbert classification system is used for ? 
Select and explain. 
A. Inguinal and femoral Hernias, B. Intestinal obstruction, C. Obturator hernia, D. Intestinal atresia
A: Inguinal and femoral Hernias
Answer: A: Inguinal and femoral Hernias 
Explanation: None