You will be given a definition of a task first, then some input of the task.
In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.

Question: The molar absorption coefficient of a compound:
Options: <0> It has dimensions of M-1 cm-1, it is constant at a specific wavelength and in a particular solvent. <1> Its dimensions are mol L-1 cm-2 and it is constant at a given wavelength and in a given solvent. <2> It has dimensions L mol-1 cm-3 and is constant throughout the spectral region and is not influenced by the solvent. <3> Its dimensions are Photons per mole and it varies with the wavelength and with the solvent. <4> It is dimensionless, constant and does not vary with the wavelength or with the solvent.
Output:
chemistry