This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: AIIMS 2018, Subject name: Biochemistry
All of the following should be avoided by a patient with lactose intolerance, EXCEPT: 
Select and explain. 
A. Condensed milk, B. Ice-cream, C. Skimmed milk, D. Yoghu
D: Yoghu
Answer: D: Yoghu 
Explanation: Lactose intolerance due to a defect in the enzyme lactose (beta galactosidase) is very common. The treatment advocated is severe restriction of lactose (any kind of milk and milk products). Yoghu - In yogu some of the bacteria produce lactase enzyme that can digest lactose.