A polygon is graphed on a coordinate grid with (x, y) representing the location of a certain point on the polygon. The polygon is transformed using the rule (x, y)→(ax, ay) . Which statement must be true?

If a is greater than 1, the image of the polygon is larger than the polygon.

If a is greater than 1, the image of the polygon is congruent to the polygon.

If a is between 0 and 1, the image of the polygon is larger than the polygon.

If a is between 0 and 1, the image of the polygon is congruent to the polygon.