Which of the following correctly explains why icebergs float in the ocean? A. Ice is less dense than liquid water because water contracts when it freezes, filling in open space between molecules. B. Ice is less dense than liquid water because there is more open space between molecules in ice than in liquid water. C. Ice is more dense than liquid water because there is less-open-space between molecules in ice than in water. D. Water is a polar molecule, so the net positive electrical charges in the water repel the net positive electrical charges inside iceberg.