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
Fibroblasts in tissue culture form interferon of type? 
Select and explain. 
A. Alpha, B. Beta, C. Carona, D. All of the above
B: Beta
Answer: B: Beta 
Explanation: Ans. is 'b' i.e., Beta