This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gastrointestinal tract, Subject name: Pediatrics
[{'content': 'Which of the following is not a feature of infantile colic syndrome \nSelect and explain. \nA. Vomiting, B. Paroxysmal symptoms, C. Abdominal pain, D. Continous severe cry', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Other Colic Symptoms Clench her fists. Bend her arms and legs toward her belly. Have a bloated tummy. Have a red, flushed face when she cries. Pass gas while she sheds tears, often because she&;s swallowed air. Tighten her stomach muscles. Reference: GHAI Essential pediatrics, 8th edition', 'role': 'assistant'}]