30. One of the structural proteins α-keratin is the main component of human hair. Many girls often use tools to straighten hair by applying heat to iron hair into temporarily lying flat and straight. What would be the best biological explanation for this fact?
(A)Hair straighteners disrupt hydrogen bonds in α-keratin
(B)Hair straighteners disrupt ionic bonds between α-keratin molecules
(C)Hair straighteners disrupt disulfide bonds in α-keratin molecules
(D)Hair straighteners denature α-keratin molecules by disrupting the pH