When a Flat Flounder Moves Rapidly, Touching the Level Bottom

Multiple Choice

When a flat flounder moves rapidly, touching the level bottom of the ocean, what forces act on it and what is the net vertical force?

A) Lift only, for a net force up.
B) Lift only, for a net force zero.
C) Lift and weight, for a net force of zero.
D) Lift, weight, and normal force for a net force zero.