This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Inborn Errors of Metabolism, Subject name: Pediatrics
A 6-month-child presents with episodes of vomiting after ingesting fruit juice. Which of following enzyme deficiency is likely? 
Select and explain. 
A. Aldolase, B. Fructokinase, C. Glucose 6-phosphatase, D. Hexokinase
A: Aldolase
Answer: A: Aldolase 
Explanation: a. Aldolase B(Ref: Nelson's 20/e p 720-728, Ghai 8/e p 655-657)In the given scenario, the child becomes symptomatic after ingesting fruit juice, which is often sweet, containing sucrose and hence, glucose and fructose. So, he is suffering from Hereditary Fructose intolerance.