This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: obstetrics,pediatrics and geriatrics, Subject name: Social & Preventive Medicine
In which one of the following is the calcium content of milk lowest - 
Select and explain. 
A. Human milk, B. Goat milk, C. Cow milk, D. Buffalo milk
A: Human milk
Answer: A: Human milk 
Explanation: Human milk contain 28mg, Buffalo milk=210mg,cow milk=120,Goat milk=170REF. PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICAL 21ST EDITION. PAGE NO - 582