This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
True regarding galactosemia NOT RELATED-MEDICINE 
Select and explain. 
A. There is an incidence of 1 in 6000, B. The enzyme deficiency is glucose phosphorylase, C. There is an inability to metabolize galactose and lactose, D. Diagnosis is by WBC enzyme assay
C: There is an inability to metabolize galactose and lactose
Answer: C: There is an inability to metabolize galactose and lactose 
Explanation: .