This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'Which of the following signs is not suggestive of a cervical spinal cord injury - \nSelect and explain. \nA. Flaccidity, B. Increased rectal sphincter tone, C. Diaphragmatic breathing, D. Priapism', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]