Plasma membranes are best described as a

A) single layer of phospholipids with water molecules attached along one side.

B) single layer of phospholipids with tails pointed toward the inside of the cell.

C) double layer of phospholipids with hydrophobic tails facing away from each other (toward the cytoplasm of the cell and the extracellular solution).

D) double layer of phospholipids with hydrophilic heads facing away from one another.

E) double layer of phospholipids with hydrophobic tails facing toward one another.