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: Medicine
All of the following statements are true about sickle cell disease except - 
Select and explain. 
A. Patient may require frequent blood transfusions, B. Acute infection is the most common cause of mortality before 3 years of age, C. There is positive correlation between conc. HBS and polymerization of HBS., D. Patient presents early in life before 6 months of age
D: Patient presents early in life before 6 months of age
Answer: D: Patient presents early in life before 6 months of age 
Explanation: None