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
A 3 yr old child was brought to ER with complaints of hematuria after accidental ingestion of napthalene balls, this indicates: 
Select and explain. 
A. Purpura, B. Black water fever, C. G6PD deficiency, D. Heriditary spherocytosis
C: G6PD deficiency
Answer: C: G6PD deficiency 
Explanation: Napthalene poisoning, toxic effect is attibuted to the hemolytic activity of its toxic metabolites alpha naptho. Individuals with G6PD deficiency are more susceptible for napthalene toxicity. Commonest presentation of toxicity is acute hemolytic anemia. Ref: Principles of Pediatric and Neonatal Emergencies, By Panna Choudhury, Arvind Bagga, Krishan Chugh, Siddhah Ramji, 3rd Edition, Page 500.