This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abnormal labor, Subject name: Anatomy
The following statements are related to occipito posterior except 
Select and explain. 
A. Malrotation of occiput may cause occipito sacral arrest, B. 10% cases are associated with anthrapoid or android pelvis, C. Incomplete forward rotation of occiput may cause deep transverse arrest, D. Non rotation of occiput may cause are associated
B: 10% cases are associated with anthrapoid or android pelvis
Answer: B: 10% cases are associated with anthrapoid or android pelvis 
Explanation: In more than 50% the occipito posterior position is associated with either anthrapoid or android pelvis