Which of the following statements regarding the fatty acid tails of phospholipids is FALSE?

A) Phospholipids with unsaturated tails make the bilayer more fluid because the tails contain fewer hydrogens and thus form fewer hydrogen bonds with each other.
B) Saturated phospholipids' tails pack more tightly against each other than do unsaturated tails.
C) Most membrane phospholipids have one fully saturated tail.
D) Phospholipid tails in a membrane can interact with each other via van der Waals interactions.
E) Fatty acid tails vary in length.