You have a computer that runs Windows XP Professional. The computer is configured as a Simple Network Management Protocol (SNMP) agent and is monitored by an SNMP management server.  You install Windows XP Professional Service Pack 2 (SP2) and Windows Defender on the computer. You discover that the SNMP management server can no longer collect SNMP data from the computer. You need to ensure that the SNMP management server can collect data from the Windows XP Professional computer.  What should you do?（）

• A、Reinstall the SNMP.
• B、Perform a Windows Update.
• C、Uninstall Windows Defender. 
• D、Create an exception in Windows Firewall.