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: Social & Preventive Medicine
Maternal zinc deficiency leads to : 
Select and explain. 
A. Anencephaly, B. Low birth weight, C. Spontaneous abortion, D. All of the following
D: All of the following
Answer: D: All of the following 
Explanation: None