A nurse is caring for a 1-month-old infant who has a palpable abdominal mass in the right upper quadrant and stools mixed with blood and mucus. The nurse should recognize that which of the following diagnoses is associated with these findings?

A. Tracheoesophageal fistula is a congenital anomaly that affects the esophagus and is not associated with abdominal masses or blood and mucus in the stool. B. Hypertrophic pyloric stenosis typically causes projectile vomiting and failure to thrive, but it does not typically present with an abdominal mass or blood in the stool. C. Intussusception occurs when part of the intestine telescopes into another part, causing a mass, abdominal pain, and sometimes blood and mucus in the stools, which is consistent with the signs described. D. Inguinal hernia is a protrusion of abdominal contents into the groin area, not typically associated with abdominal masses in the upper quadrant or blood in the stool.