Answer:
According to research done on the topic of trailer hitches and receivers, the best answer to your question: Which of the following hitches are not allowed, would be: Bumper hitch.
Explanation:
Hitches come in 5 major classifications, according to the research done online, and there are three major receiver classes, class I, II and III. The category of them, and which one is the best to be selected when going to hitch a trailer and cargo, would depend on their gross trailer weight, tongue weight and hitch receiver size, as well as the type of cargo and most particularly, the vehicle that will be pulling the trailer.
