Your network consists of a single Active Directory domain. The functional level of the domain is Windows Server 2008 R2. The domain contains 200 Windows Server 2008 R2 servers. You need to plan a monitoring solution that meets the following requirements.   èSends a notification by e-mail to the administrator if an application error occurs on any of the servers   èUses the minimum amount of administrative effort What should you include in your plan？（）

• A、On one server， create event subscriptions for each server. On the server， attach tasks to the application  error events.
• B、On one server， create an Event Trace Sessions Data Collector Set. On all servers， create a System Performance Data Collector Set.
• C、On all servers， create event subscriptions for one server. On all servers， attach a task for the  application error events.
• D、On all servers， create a System Performance Data Collector Set. On one server， configure the report settings for the new Data Collector set.