You work in a company which uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a database named DB1 in the instance. You put forward a database maintenance plan. The maintenance plan rebuilds indexes, checks database integrity, writes a report to a text file. Now the company requires that when the maintenance plan executes abnormally, the operators can be notified by an e-mail message. You've been assigned this task. So you have to make modifications on the SQL Server instance. What should you do?（）

A. For the SQL Server Agent, you should enable a fail-safe operator
B. You should modify the database maintenance plan, making it send an e-mail to the appropriate operators
C. You should modify the database maintenance plan, making it include a Notify Operator task that e-mails the appropriate operators.
D. You should modify the SQL Server Agent job. The job executes the database maintenance plan to notify the appropriate operators.