Which option correctly states the difference between the illusion of form and real form?

An illusion shows depth on a flat surface, while real form occupies actual space

The governing concept is the difference between represented space and physical three-dimensional space. A drawing or painting may use contour, perspective, overlap, value changes, and shading to create an illusion of volume and depth on a flat sheet. The paper itself remains flat, even though the image appears solid. A sculpture or model, by contrast, has actual height, width, and depth; it occupies space and can generally be viewed from several sides. Therefore, option A is correct. Option B reverses the definition, option C incorrectly limits real form to drawings, and option D ignores the difference between visual suggestion and physical presence. The medium determines how form is experienced.

This is a Class 9 Art Education question. Chapter: Elements of Art. Topic: Form.