Which of the Following Statements Is True

Which of the following statements is true?

A) Application of heat,alcohol,or acid can kill proteins.
B) The human digestive tract cannot digest the peptide bonds that hold amino acids together.
C) Transamination is the process of removing the nitrogen group from an amino acid and transferring it to another substance.
D) A protein molecule loses its natural folded and coiled shape as well as its usual functions when it undergoes hydrogenation.