Statement I : Most common secondary structure of protein is $\mathrm{\beta }-$pleated structure
Statement II : Quaternary structure of protein is the spatial arrangement of various polypeptide chains with one another.

• A

  Both statements I and II are correct

• B

  Statement - I is correct and statement - II is incorrect

• C

  Statement - I is incorrect and statement - II is correct

• D

  Both statements I and II are incorrect