Answer:
The answer is option D.
Step-by-step explanation:
plasma cells, a sort of leukocyte. They are created because of the remote bodies that enter the body. The immunoglobulins are otherwise called antibodies. The resistant reaction of the antibodies is very mind boggling and exceedingly particular to the sort of antigen it ties to. There are five kinds of immunoglobulins in the well evolved creatures, they are IgA, IgD, IgE, IgG and IgM.