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Which one of the following immune system components does not correctly match with its respective role?

A)  Interferons - secreted by virus-infected cells and protect non-infected cells from further viral infection.

B)  B- lymphocytes - produce antibodies in response to pathogens into blood to fight with them.

C)  Macrophages - mucus secreting cells that trap microbes entering in the body.

D)  IgA - present in colostrum in early days of lactation to protect infant from diseases.