The correct option is A Alkaline phosphatase
The enzyme-linked immunosorbent assay (ELISA) is a common laboratory technique, which is used to measure the concentration of an analyte (antibodies or antigens) in solution. The purpose of an ELISA is to determine if a particular protein is present in a sample and if so, how much. Alkaline phosphatase(ALP) is a hydrolase enzyme responsible for removing phosphate groups from many types of molecules, including nucleotides, proteins, and alkaloids. The process of removing the phosphate group is called dephosphorylation. The Alkaline Phosphatase Assay Kit is a highly sensitive, simple, direct and HTS-ready colorimetric assay designed to measure ALP activity in serum and biological samples.