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: Microbiology
Which of the following is weakest antigen 
Select and explain. 
A. Nucleic acids, B. Proteins, C. Carbohydrates, D. Lipids
A: Nucleic acids
Answer: A: Nucleic acids 
Explanation: Proteins are stronger immunogens followed by carbohydrates, Lipids, Nucleic acids.