A 3-year-old boy is brought to the physician for a follow-up appointment regarding hepatomegaly picked up on physical examination. Serum lactate levels are not elevated. Blood glucose is within the normal fasting range. Vitals are normal. Fundoscopic and neurologic examinations show no abnormalities. He has no past medical history and there is no family history. Which of the following enzymes is most likely to be deficient in this patient?
A) Arylsulfatase A
B) α-Galactosidase A
C) α-1,4-Glucosidase
D) Debranching enzyme
E) Myophosphorylase
