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: Pediatrics
Expresses breast milk can be stored in refrigerator, for how many hours: September 2011 
Select and explain. 
A. 12 hours, B. 24 hours, C. 36 hours, D. 48 hours
B: 24 hours
Answer: B: 24 hours 
Explanation: Ans. B: 24 hours Expressed breast milk can be stored at room temperature for 6-8 hours, in a refrigerator for 24 hours and a freezer at -20 degree C for 3 months