question: A student has one liter of feathers and one liter of iron nails. Which statement best compares the masses of the two samples?
choices.text: The masses cannot be compared without a balance. The mass of the feathers is less than the mass of the nails. The mass of the feathers is the same as the mass of the nails. The mass of the feathers is greater than the mass of the nails.
choices.label: A B C D