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: Anatomy
[{'content': 'If a drug is active against pre erythrocytic stage of the malaria parasite it will be useful as \nSelect and explain. \nA. Suppressive prophylactic, B. Causal prophylactic, C. Clinical curative, D. Radical curative', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (Ref KDT 6/e p782) Stage ---clinical use Preerythrocytic- Causal prophylaxis Erythrocytic-Clinical cure -Suppressive prophylaxis Exo-Erythrocytic: Radical cure Gametocytic Pevention of transmission', 'role': 'assistant'}]