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: Ophthalmology
A person is diagnosed to be a diabetic on his 45th bihday. You will recommend a dilated fundoscopic examination: 
Select and explain. 
A. Immediately, B. Before his 50th bihday, C. When he turns 50 years of age, D. When he complains dimness of vision
A: Immediately
Answer: A: Immediately 
Explanation: Ans. a. Immediately