Your EC2-Based Multi-tier application includes a monitoring instance that periodically makes application -level read only requests
of various application components and if any of those fail more than three times 30 seconds calls Cloud Watch lo fire an alarm,
and the alarm notifies your operations team by email and SMS of a possible application health problem. However, you also need
to watch the watcher-the monitoring instance itself-and be notified if it becomes unhealthy. Which of the following Is a simple way
to achieve that goal?

A.
Run another monitoring instance that pings the monitoring instance and fires a could watch alarm mat notifies your operations
team should the primary monitoring instance become unhealthy.

B.
Set a Cloud Watch alarm based on EC2 system and instance status checks and have the alarm notify your operations team
of any detected problem with the monitoring instance.

C.
Set a Cloud Watch alarm based on the CPU utilization of the monitoring instance and nave the alarm notifies your operations
team if C r the CPU usage exceeds 50% few more than one minute: then have your monitoring application go into a CPU-bound

loop should it Detect any application problems.

D.
Have the monitoring instances post messages to an SOS queue and then dequeuer those messages on another instance
should DC-the queue cease to have new messages, the second instance should first terminate the original monitoring instance
start another backup monitoring instance and assume the role of the previous monitoring instance and beginning adding messages
to the SOS queue.