Task: Question Answering
Input (English): Question: The molar absorption coefficient of a compound: 
 Options:  <1> It has dimensions of M-1 cm-1, it is constant at a specific wavelength and in a particular solvent. <2> Its dimensions are mol L-1 cm-2 and it is constant at a given wavelength and in a given solvent. <3> It has dimensions L mol-1 cm-3 and is constant throughout the spectral region and is not influenced by the solvent. <4> Its dimensions are Photons per mole and it varies with the wavelength and with the solvent. <5> It is dimensionless, constant and does not vary with the wavelength or with the solvent.
Output (English): 1