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
A 12 hour old male child of a diabetic mother is brought to you with seizures, which of the following is the least likely cause? 
Select and explain. 
A. Hypoglycemia, B. Hypocalcemia, C. Hypermagnesemia, D. Bih asphyxia
C: Hypermagnesemia
Answer: C: Hypermagnesemia 
Explanation: It is possible for babies of diabetic mothers to suffer from hypoglycemia, hypocalcemia & hypomagnesemia resulting in seizure. The exact mechanism of hypomagnesemia and hypocalcemia is not clear. Ref: Karla Philip, 3rd Edition, Page 296