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
Differentiating feature of female pelvis is -a) Subpubic angle V shapedb) Subpubic angle U shaped and obtusec) Pre auricular sulcus is prominentd) Ischial tuberosity is everted and obturator foramen is large and ovale) Ischial tuberosity is everted and obturator foramen small and triangular
assistant
The correct answer is  Subpubic angle in females is U shaped, rounded and obtuse (90-100o).
Preauricular sulcus is more frequent, broad and deep in female pelvis. 
In female pelvis, ischial tuberosity is everted and obturator foramen is small triangular.