All of the Following Are Steps in the Process of Clonal

Multiple Choice

All of the following are steps in the process of clonal selection, EXCEPT

A) immune cells that react with self proteins are deleted.
B) pattern recognition receptor molecules bind to highly conserved components of a pathogen.
C) that when an immune cell binds to an antigen from a pathogen, it proliferates rapidly.
D) recombination generates a diverse immune repertoire.