Based on What You Know About Fibrous Protein Structure and Sequence,what

Multiple Choice

Based on what you know about fibrous protein structure and sequence,what type of fibrous protein is this sequence most likely to from (You can assume that the protein is longer than what is shown and is repeating as shown,also note the polarity of each amino acid. ) ?
Val - Cys - Lys - Val - Cys - Ala - Cys - Val - Cys - Lys - Val - Cys - Ala - Cys

A) " $\alpha$ keratin"
B) "β keratin"
C) "collagen"
D) "pleated collagen"
E) "This sequence cannot be from any of the structural proteins."