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
Which of the following drugs may be used to arrest premature labour:a) Aspirinb) α-Methyl dopac) Magnesium sulphated) Diazoxide 
Select and explain. 
A. cd, B. bc, C. bd, D. ac
A: cd
Answer: A: cd 
Explanation: None