Which of the Following Occur When a Protein Is Denatured

Multiple Choice

Which of the following occur when a protein is denatured?
II. Covalent bonds are broken.
III. Hydrogen bonds are broken.
IV. The protein loses its shape.
V. The protein loses its biological activity.

A) All of these are true statements.
B) All of these statements, except IV, are true.
C) All of these statements, except I, are true.
D) Only II and III are true.
E) None of these statements is true.