The following table describes several molecules and their functions. The molecules all belong to the same class.


Molecule Function
Oleic acid used for energy storage and insulation in whales
Phospholipid component of cell membranes in plants and animals
Brassinosteroid steroid hormone involved in pollen elongation in plants

Which class of biomolecule do the molecules in the table belong to?

A.
proteins
B.
lipids
C.
carbohydrates
D.
nucleic acids