Structure of protein is complicated and requires a detailed study.False statement regarding structure of proteins is

• A

  Most common $2^0$ structure is $\mathrm{\beta }-$pleated structure

• B

  $3^0$ structure is stabilized by hydrogen bonding , vanderwaals forces, ionic bonds and bisulphide linkages

• C

  $1^0$ structure gives the sequence of amino acids in the polypeptide chain

• D

  $2^0$ structure gets destroyed during denaturation of protein