Consider a relation with attributes X$,$ Y$,$ and Z and superkey $\{$X$,$ Y$\}.$ We do not know anything more about this relation, but there may be other keys$/$superkeys$.$

Which of the following statements is most accurate?

Group of answer choices

X$,$ Y pairs are always allowed to repeat, regardless of other keys$/$superkeys

X$,$ Y pairs may be able to repeat, depending on other keys$/$superkeys

X$,$ Y pairs are not allowed to repeat, regardless of other keys$/$superkeys