As Part of the Development of a New Spectrophotometric Assay

As part of the development of a new spectrophotometric assay, an absorption spectrum was recorded.Which of the following describes the purpose for this absorption spectrum?

A) to determine the appropriate wavelength of analysis for the assay
B) to determine the maximal concentration that can be accurately measured for the assay
C) to check for stray light
D) to check for linearity