A nurse is collecting data from an infant who has gastroesophageal reflux. Which of the following findings should the nurse expect? (Select all that apply.)

A. Wheezing: Reflux of stomach contents can cause aspiration, leading to wheezing or respiratory symptoms. B. Weight Loss: Chronic vomiting and poor feeding due to GER can result in inadequate weight gain or weight loss. C. Pallor: Pallor is not commonly associated with GER but may indicate anemia or another condition. D. Vomiting: Vomiting, especially after feeding, is a hallmark sign of GER. E. Rigid Abdomen: A rigid abdomen is more indicative of severe abdominal pathology like peritonitis, not GER.