Prions Are Created When Normal Proteins in the Body ____

Prions are created when normal proteins in the body ____.

A) combine with large ribosomal subunit and become infectious
B) exchange several long sections of amino acids with other infected proteins
C) refold into a different and infectious three-dimensional shape that kills cells in the brain and nervous system
D) undergo mutation and create hundreds of copies of themselves
E) invade the immune system, causing it to mistakenly destroy the body's healthy tissue