Membranes organize cell activities. The proteins imbedded in the membranes are essential to their function. These membrane proteins have properties that allow them to float in the membrane. Which of the following describe those properties?

A. The surface region of the protein in the interior of the membrane is mostly hydrophobic.

B. The surface region exposed to the outer environment is hydrophobic.

C. The surface region exposed to the interior environment is hydrophobic.

D. The surface region of the protein in the interior of the membrane is mostly hydrophillic.