${?}_{{?}_{{?}_{?}}{?}_{{?}_{?}}\text{a}\text{r}\text{e}\text{F}\text{u}\text{n}\text{c}\text{t}\text{i}\text{o}\text{n}\text{s}to\text{c}\text{l}\text{e}\text{a}\text{n}\text{u}\text{p}\text{a}\text{f}\text{t}\text{e}\text{r}aninstanceis\text{d}\text{e}\text{s}\text{t}\text{r}\text{o}\text{y}\text{e}\text{d}\text{.}}$

$A.$

Constructors.

$B.$

Pointers

$C.$

Destructors.

$D.$

heap$-$dynamic data.