The Block Diagram for a Phosphoacylglycerol (Glycerophospholipid)is Shown Below

The block diagram for a phosphoacylglycerol (glycerophospholipid) is shown below. Phosphoacylglycerols can interact with both water and other lipids,and therefore are well suited for their role in the lipid bilayer of cell membranes. Which statement best explains this behavior?

A) They contain a phosphodiester.
B) They contain both a hydrophobic region as well as a hydrophilic region.
C) They contain both saturated fatty acids as well as unsaturated fatty acids.
D) They contain both single bonds as well as double bonds.