Formation of a Lipid Bilayer Is Energetically Favorable

Multiple Choice

Formation of a lipid bilayer is energetically favorable.How does this arrangement result in higher entropy for the system, and thus make bilayer formation energetically favorable?

A) Polar head groups form a hydrogen-bonding network at the interface with water.
B) Water molecules form cage-like structures around hydrophobic molecules.
C) Hydrogen bonds form between neighboring polar head groups in the bilayer.
D) Fatty acid tails are highly saturated and flexible.