You work as an application developer at Cer-Tech.com.You are in the process of creating an application for Cert-Tech.com’s Human Resources department that tracks employee benefits You have to store current employee data without recompiling the application. You elect to store this employee data as a custom section in the application configuration file. The relevant portion of the application configuration file is shown in the following exhibit： What should you do？（）

A. Create a custom section handler class that inherits the ConfigurationSection interface
B. Add a section element to the EmployeeSection element of the application configuration file
C. Create a custom section handler class that implements the IConfigurationSectionHandler interface.
D. Add an EmployeeSection element to the configSections element of the application confguration file
E. Create a custom section handler class that implements the IApplicationSettingsProvider interface
F. Add a section element to the configSections element of the application configuration file