A breastfeeding mother is planning to return to work 3 months after her baby is born. The mother is planning to use an electric breast pump and freeze some breast milk for use later. Which information does the nurse need to provide?

Frozen breast milk can be defrosted in a microwave.

Breast milk can only be frozen in special plastic freezer bags.

The freezer door shelf decreases the chance of milk contamination.

Breast milk can be kept in a deep freezer for 6 to 12 months.