Interleukin-4, a Polypeptide, Is Shown Below

Multiple Choice

Interleukin-4, a polypeptide, is shown below. In which of the following are the secondary structures labeled correctly?

A) A: random folding B: β-pleated sheets C: α-helix
B) A: β-pleated sheets B: random folding C. α-helix
C) A: random folding B. α-helix C: β-pleated sheets
D) A. α-helix B: random folding C: β-pleated sheets
E) A: β-pleated sheets B: α-helix C: random folding