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: Gynaecology & Obstetrics
[{'content': 'Memory of an IUD device is impoant while inseion into the intrauterine cavity. Memory of CuT380A is: \nSelect and explain. \nA. 2 minute, B. 3 minute, C. 4 minute, D. 5 minute', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Memory of an IUD device is the time taken to regain its original shape on inseion to the uterine cavity. The Cu-T 380A should not be loaded into its inseer tube more than 5 minutes before inseion. If longer, the malleable arms tend to retain the "memory" of the inseer and remain bent inward. Ref: Hoffman B.L., Schorge J.O., Schaffer J.I., Halvorson L.M., Bradshaw K.D., Cunningham F.G., Calver L.E. (2012). Chapter 5. Contraception and Sterilization. In B.L. Hoffman, J.O. Schorge, J.I. Schaffer, L.M. Halvorson, K.D. Bradshaw, F.G. Cunningham, L.E. Calver (Eds), Williams Gynecology, 2e.', 'role': 'assistant'}]