This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Plasma cells 
Select and explain. 
A. Contain nucleus, B. Helps in the formation of antibody, C. Are deficient in cytoplasm, D. Are derived from T cells
B: Helps in the formation of antibody
Answer: B: Helps in the formation of antibody 
Explanation: Ref Robbins 8/e p183_184;7/e p82;9/e p191 Plasma cells, also called plasma B cells, plasmocytes, plasmacytes, or effector B cells, are white blood cells that originate in the bone marrow and secrete large quantities of proteins called antibodies in response to being presented specific substances called antigens.