Answer: (E) none of the other choices
Explanation:
None of the options are correct in the above question.
The USA extends Most Favoured Nation Status to most countries in the world including Germany so that would not be a reason for the car's not to pass through customs.
The cars could indeed be a threat to national security. Just because they come from a safe country does not mean that they were not tampered with. They need to be properly inspected.
They are indeed a source of competition for US automakers but that would be no reason to stop them. Perhaps tariffs could be applied on them but they will not be stopped.
There is no provision in US Customs practices that prohibits the importation of used cars solely because they are used cars therefore it will not be a reason to halt the car's going through customs.
None of the options are therefore correct.
