I painted the inner four walls of a box. Then I put an ice block into it such that it did not touch the walls, but I couldn't do the same when I put water in that box. Why?

• A. Liquid takes the shape of container, so it will always touch the walls of the box in which you put it.
• B. The molecules of liquids are more tightly packed than that of gases.
• C. Both (a) and (b)
• D. Neither (a) nor (b)