Henry works as a Software Developer for InfoTech Inc. He develops a Web application for registered employees of the company. The application requires accessing several XML data stored in a database…

Henry works as a Software Developer for InfoTech Inc. He develops a Web application for registered employees of the company. The application requires accessing several XML data stored in a database named Database1. However, Henry wants to ensure that the XML data is validated before being accessed. Which of the following classes will Henry use to validate the XML data?