Which of the Following Statements Describes What Initially Happens When

Which of the following statements describes what initially happens when surfactants are dissolved in water?

A) The surfactant molecules accumulate at the surface of the water.
B) The surfactant molecules combine with ions in the water to form spheres.
C) The surfactant molecules self-assemble into spheres where the hydrophobic tails point towards the interior of the sphere.
D) The surfactant molecules self-assemble into spheres where the hydrophobic tails point towards the exterior of the sphere.
E) None of the above.