Task: Instance Description Understanding (ontology: Sciences/Computer_Science)

Which of the following definitions best describes the instance 'milligram per milliliter'?

A. A mass unit density which is equal to mass of an object in milligrams divided by the volume in milliliters.
B. A unit of molarity which is equal to one thousandth of one millionth of a molar or 10^[-9] M.
C. A unit of concentration which expresses a concentration of 1 mole of solute per liter of solution (mol/L).
D. A volume per unit volume unit which is equal to one millionth of a liter of solute in one liter of solution.

Answer: A mass unit density which is equal to mass of an object in milligrams divided by the volume in milliliters.