A triangle ABC has vertices (0, 0), (6, 0) and (2, 3) in the XY-plane. What is the area of $\Delta ABC$ ?

Question

$\begin{array}{1 1} (a)\; \text{6 sq. unit} \\ (b)\; \text{9 sq. unit} \\ (c)\; \text{$\frac{9}{2}$ sq. unit } \\ (d)\; \text{12 sq. unit} \end{array}$