Is my answer incorrect? Appian quiz (record type relationship)

docs.appian.com/.../record-type-relationships.html

i'm wondering why my answer is incorrect?

Since you can technically establish a many-to-many relationship in Appian, they likely want that selected as well.

Yeah .. that is exactly the problem with these multiple choice questions. Depending on your level of expertise, your answers vary.

apologies for not specifying my issue earlier.

In a quiz when we answer any question there is an answer sheet preview after submiting a question, and in answer sheet you can see if the cross is there in any option it means its not the correct option, and option outline trun blue for the selected options by candidate.

so we can match the candidate answers and correct answers.

you got my point.