Which statement will accurately declare a variable x and store int $9,$ which is $3$ to the power of $2?$

Group of answer choices

A$)$ double x $=$ Math.pow$(3,2)$;

B$)$ int x $=($int$)$ Math.pow$(3,2)$;

C$)$ int x $=($int$)$ Math.pow$(3\mathrm{.}0,2\mathrm{.}0)$;

D$)$ Both B and C