Which of These Statements Describes the Plasma Membrane

Multiple Choice

Which of these statements describes the plasma membrane

A) It appears under an electron microscope as a single dark line around the cell.
B) It is composed of a double layer of phospholipid molecules with proteins interspersed throughout the phospholipids.
C) It separates the intravascular and extracellular fluid.
D) It separates the intravascular and intracellular fluid.