This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other topics and Adverse effects, Subject name: Pharmacology
[{'content': 'Stimulant purgatives are contraindicated in the following: \nSelect and explain. \nA. Bed ridden patients, B. Before abdominal radiography, C. Subacute intestinal obstruction, D. All of these', 'role': 'user'}, {'content': 'Answer: C \nExplanation: (Ref: KDT 6/e p655) Stimulant (or irritant) purgatives are contra-indicated in pregnancy and intestinal obstruction (both subacute as well as chronic).', 'role': 'assistant'}]