Your company has an Active Directory forest. The corporate network uses DHCP to configure client computer IP addresses. The DHCP server has a DHCP client reservation for a portable computer named WKS1. You install asecond DHCP server on the network. You need to ensure that WKS1 receives the DHCP reservation from the DHCP service. What should you do？（）

• A、Run the ipconfig /renew command on WKS1.
• B、Run the netsh add helper command on WKS1.
• C、Add the DHCP reservation for WKS1 to the second DHCP server.
• D、Add both DHCP servers to the RAS and IAS Servers group in the Active Directory domain.