Which of the two are the less dense material shown?
 Material Mass Volume
 Rock. 1000. 0.5
 Pillow. 200. 10
 Bottle of soda. 2000. 2
 Loaf of bread. 100. 1
 A) loaf of bread and pillow
 B) rock and bottle of soda
 C) bottle of soda and loaf of bread
 D) loaf of bread and rock