The correct option is C Interferon
Interferons are antiviral molecules produced by viral-infected cells.
Any substance that is foreign to the human body and capable of eliciting an immune response is called an antigen.
Protein molecules produced by B lymphocytes in response to an antigen is called antibodies.
Antibiotics are compounds produced by a bacteria or a fungal cell, which inhibits the growth of other micro-organisms in its vicinity.