Refer to Animation: Fluid Mosaic Model. Although the phospholipid molecules can be in constant lateral movement, they very rarely flip from one side of the bilayer to the other. Which of the answer choices could explain this? a.The head groups are too large to fit between the interior fatty acid tails. b.The cholesterol keeps the phospholipids on the correct side. c.The molecular attraction between the fatty acid tails is too strong. d.The head groups are repelled by the hydrophobic membrane interior.