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: Social & Preventive Medicine
Seasonal trends is shown by - 
Select and explain. 
A. Varicella, B. Polimyelitis, C. Malaria, D. All
D: All
Answer: D: All 
Explanation: Ans. All options are correct