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: Social & Preventive Medicine
Which of the following is least in protein quality ? 
Select and explain. 
A. Gelatin, B. Lactalbumin, C. Albumin, D. Cashewnut protein
A: Gelatin
Answer: A: Gelatin 
Explanation: None