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: Gynaecology & Obstetrics
Concentration of MgSO4 in the treatment of eclampsia in meq/L: 
Select and explain. 
A. 7 − 10., B. 10 − 15., C. 2 − 4., D. 4 − 7.
D: 4 − 7.
Answer: D: 4 − 7. 
Explanation: None