This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
All are true about HLA complex except 
Select and explain. 
A. Class-I antigen are expressed in all nucleated cells and platelets, B. Class-II inducts helper T-cells, C. Class-I is homodimer whereas Class-II is heterodimer, D. Class- I inducts cytotoxic T-cells
C: Class-I is homodimer whereas Class-II is heterodimer
Answer: C: Class-I is homodimer whereas Class-II is heterodimer 
Explanation: .