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: Pharmacology
Antacid drug that typically causes diarrhoea 
Select and explain. 
A. Sodium bicarbonate, B. Magnesium hydroxide, C. Calcium carbonate, D. Aluminium hydroxide
B: Magnesium hydroxide
Answer: B: Magnesium hydroxide 
Explanation: None