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: Pediatrics
A most severe form of G–6–PD deficiency – 
Select and explain. 
A. Type 1, B. Type 2, C. Type 3, D. None
C: Type 3
Answer: C: Type 3 
Explanation: It is of 3 types :
Type I is the mildest form.
Type II is a moderately severe form.
Type III patients suffer from a non-spherocytic hemolytic anemia even without exposure to drugs.