What Evidence Convinced Overton That Membranes Were Composed of Lipids

What evidence convinced Overton that membranes were composed of lipids?

A) He could see the lipids in the microscope.
B) Membranes were destroyed by enzymes that degraded lipids.
C) More lipid-soluble solutes entered root hair cells faster than polar solutes.
D) Membranes dissolved in gasoline.
E) Membranes did not dissolve in water.