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: Physiology
Plasma ceruloplasmin alpha 2 globulin is a 
Select and explain. 
A. alpha 1 globulin, B. alpha 2 globulin, C. beta 1 globulin, D. beta 2 globulin
B: alpha 2 globulin
Answer: B: alpha 2 globulin 
Explanation: None