Which Statement About The $\alpha$ -Helix Is True?
A) "The Hydrophobic Interior Of

Which statement about the $\alpha$ -helix is true?

A) "The hydrophobic interior of $\alpha$ -helices is stabilized by the side chains of hydrophobic amino acids."
B) "The amino acid side chains point out to the sides with every third amino acid roughly lining up on one side of the helix."
C) " $\alpha$ -Helices have backbone amide groups that are hydrogen bonded to amino acid side chains."
D) " $\alpha$ -Helices have 5 amino acids per one turn of the helix."