问题：

[单选]

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.