$(tx+9)^2=81$ where $t$ is a constant. If $x=-2$ is a possible solution to the equation, what is the possible value of $t$ ?

Question

$\begin{array}{1 1} (a)\;0 \\ (b)\; 1 \\ (c)\; -1 \\ (d)\; \text{none of the above} \end{array}$