According to the passage, Rossman's research suggests that A. a defense against rhinoviruses might exploit structural similarities among the strains of rhinovirus B. human cells normally do not develop antibodies to components of their own cells C. the various strains of rhinovirus differ in their ability to bind to the surface of a host cell D. rhinovirus versatility can work to the benefit of researchers trying to find a useful antibody E. Colonno's research findings are probably invalid