Two perpendicular lines

Geometry Level 3

Two perpendicular lines are intersecting the $y$ -axis at the same point $(0,3)$ . Which of the following area(s) is not possible for the triangle formed by these two lines and the $x$ -axis?

(1): $8\text{ unit}^2$ .
(2): $10\text{ unit}^2$ .
(3): $6\text{ unit}^2$ .
(4): $12\text{ unit}^2$ .