ASE-Style Multiple Choice While Having a Discussion, Technician a Says

ASE-Style Multiple Choice While having a discussion, Technician A says that the term rustout refers to corrosion that has had time to penetrate completely through the steel panel. Technician B says that rustout is an early stage of corrosion that has not penetrated the steel panel. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B