Which option correctly shows difference of surfaces through line?

Irregular lines for wood and wavy lines for water

The governing concept is using line character to suggest surface and texture. Artists select marks that visually resemble the behaviour of a material. Irregular or grain-like lines can suggest the uneven fibres and natural variation of wood, while flowing, wavy lines can suggest the movement and reflective ripples of water. Thus option A gives two appropriate and understandable pairings. Option B assigns rigid square marks to a fluid surface and gives no useful indication of wood. Option C’s jagged lightning marks usually suggest sharpness, cracks, or energy rather than the soft woven quality of cloth. Option D is too limited and does not convincingly communicate the hard, reflective quality of metal. Line quality supports observation; it is not a random symbol system.

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