Which statement about the DOT 406 cargo tank features is true?

Which statement about the DOT 406 cargo tank features is true?

• A. It has large oval ends
• B. It has flat ends
• C. It is used to transport whiskey
• D. It has a pressure range of 3000-5000 psi

Answer: (A)

The key idea is recognizing the distinctive physical design of DOT 406 cargo tanks. These are low‑pressure, non‑pressurized tanks used for flammable liquids like gasoline, and a defining feature is their large oval ends. That rounded end shape helps with structural integrity under low internal pressures and makes cleaning and unloading easier. The other statements don’t fit: flat ends describe a different tank style, transporting whiskey isn’t a defining trait of this tank type, and a pressure range in the thousands of psi would apply to high‑pressure systems, not to DOT 406 tanks.

The key idea is recognizing the distinctive physical design of DOT 406 cargo tanks. These are low‑pressure, non‑pressurized tanks used for flammable liquids like gasoline, and a defining feature is their large oval ends. That rounded end shape helps with structural integrity under low internal pressures and makes cleaning and unloading easier. The other statements don’t fit: flat ends describe a different tank style, transporting whiskey isn’t a defining trait of this tank type, and a pressure range in the thousands of psi would apply to high‑pressure systems, not to DOT 406 tanks.