Two Diesel Technicians Are Discussing Diesel Fuel Corrosion Inhibitors

Two diesel technicians are discussing diesel fuel corrosion inhibitors. Technician A says that due to the sulfur content of diesel fuel, it can lighten materials made of copper and bronze, forming a gooey coating on these parts. Technician B says that because many fuel tanks and lines are made of steel, the interior and both metal fittings and filter housings can rust or corrode. Who is right?

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