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

Which of the following definitions best describes the instance 'millimolar'?

A. A volume per unit volume unit which is equal to one millionth of a liter of solute in one liter of solution.
B. A unit of molarity which is equal to one thousandth of a molar or 10^[-3] M.
C. A mass unit density which is equal to mass of an object in grams divided by the volume in liters.
D. A concentration unit which a measure of viable bacterial numbers in a given volume.

Answer: A unit of molarity which is equal to one thousandth of a molar or 10^[-3] M.