A 8-year-old boy was admitted to the emergency depament complaining of nausea, vomiting, fever, and loss of appetite. On examination, he was found to have tenderness and pain on the right lower quadrant. Based on signs and symptoms, the diagnosis of acute appendicitis was made. During an appendectomy performed at McBurney's point, which of the following structures is most likely to be injured?
Deep circumflex femoral aery Inferior epigastric aery Ilio-hypogastric nerve Genitofemoral nerve