question_answer

What kinds of the structures of proteins are shown in the following figure?

[A]	[B]
[C]	[D]

A) \[A=1{}^\circ \] structure, \[B=2{}^\circ \] structure, \[C=3{}^\circ \] structure, \[D=4{}^\circ \] structure

B) \[A=4{}^\circ \] structure, \[B=2{}^\circ \] structure, \[C=3{}^\circ \] structure, \[D=2{}^\circ \] structure

C) \[A=1{}^\circ \] structure, \[B=4{}^\circ \] structure, \[C=3{}^\circ \] structure, \[D=2{}^\circ \] structure

D) \[A=4{}^\circ \] structure, \[B=3{}^\circ \] structure, \[C=2{}^\circ \] structure, \[D=1{}^\circ \] structure