The R group or side chain of the amino acid threonine is highly polar. The R group or side chain of the amino acid leucine is highly nonpolar. In what location on the tertiary structure of a protein would you expect to find these amino acids?

A) Both threonine and leucine would be on the exterior of the protein.

B) Both threonine and leucine would be in the interior of the protein.

C) Threonine would be on the interior, and leucine would be on the exterior of the protein.

D) Leucine would be on the interior, and threonine would be on the exterior of the protein.