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: Surgery
What can a mother benefit from breastfeeding? 
Select and explain. 
A. Breastfeeding mothers would lose weight rapidly., B. Breastfeeding is a 100% effective contraceptive method because of lactational amenorrhea method., C. Breastfeeding mothers can teach the fathers how to breastfeed so they can enjoy feeding time., D. Breastfeeding prevents breast cancer.
D: Breastfeeding prevents breast cancer.
Answer: D: Breastfeeding prevents breast cancer. 
Explanation: D: Woman who breastfeeds reduces her chance of acquiring breast cancer.
A: This is not true; women still need a balanced diet during breastfeeding and therefore should eat more.
B: Some breastfeeding women are already ovulating four weeks after giving birth, some even during breastfeeding.
C: The father can find other ways to bond with the infant aside from feeding.