${?}_{{?}_{{?}_{?}}isan\text{e}\text{x}\text{a}\text{m}\text{p}\text{l}\text{e}ofan\text{e}\text{x}\text{c}\text{h}\text{a}\text{n}\text{g}\text{e}-\text{t}\text{r}\text{a}\text{d}\text{e}\text{d}\text{f}\text{u}\text{n}\text{d}\text{.}}$

Question $16$ options:

$A$

A Qube $orQQQ$

$B$