This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General surgery, Subject name: Surgery
As per EHS classification, a primary, direct inguinal hernia with 4 cm width would be 
Select and explain. 
A. PD4, B. PM4, C. PD3, D. PM3
D: PM3
Answer: D: PM3 
Explanation: The European Hernia Society has suggested a simplified system of classificationPrimary or recurrent (P or R);Lateral, medial or femoral (L, M or F);Defect size in fingerbreadths (each finger is assumed to be 1.5 cm.)Ex1) A primary, direct inguinal hernia with 4 cm width would be PM3Ex 2) A Recurrent, indirect, inguinal hernia with a 3-cm defect size would be RL2Ref: Bailey and love 27e pg: 1031