The mother of a 1B-year-old girl calls the emergency department, suspecting her daughter’s abdominal pain may be appendicitis. In addition to pain, her daughter has a fever of 100°F (37.8℃) and has vomited twice. What should the nurse tell the mother（）
A. Give the daughter a laxative to rule out the possibility that constipation is causing the pain.
B. Gently press on the left lower quadrant of her daughter’s abdomen to test for rebound tenderness.
C. It’s most likely the flu because her daughter is too young to have appendicitis.
D. Immediately bring her daughter into the emergency department before the appendix has a chance to rupture.