system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
In a vertex presentation the diameter of engagement is:
assistant
The correct answer is  Ans. A. SuboccipitobregmaticFetal skulla. Mento vertical diameter =14.5cm,b. Submentovertical =11.5cm,c. Sub occipitofrontal =10cm,d. Suboccipitobregmatic =9.5cm (diameter of engagement in vertex presentation),e. Biparietal =9.5cm.