A mobile application is deployed on Amazon EC2 instances with Amazon EC2 Auto Scaling for efficient capacity management. Amazon EventBridge rules are created to send Amazon EC2 Auto Scaling generated events for terminated instances to Amazon SNS as a target. Junior Sysops administrator observes many events are not successfully delivered to Amazon SNS and are dropped. He is looking for your suggestion for retaining these failed events instead of getting dropped.
Which of the following configurations in Amazon EventBridge can be done to meet this requirement? 

Answer options:

A.Configure new EventBridge rules for events that are getting dropped.
B.Configure new EventBridge rules for these events in each region as all inter region events are getting dropped.
C.Configure an EventBridge DLQ as standard Amazon SQS queues & send all failed events to it for further processing.
D.Configure an EventBridge DLQ as FIFO Amazon SQS queues & send all failed events to it for further processing.

Correct Answer: C
When an event is not delivered to the target, after retry time, Amazon EventBridge drops these events & does not process them further. To avoid getting events dropped, EventBridge DLQs can be created to store all failed delivery events which can be analyzed and processed later. EventBridge DLQs are standard Amazon SQS queues. FIFO Amazon SQS queues are not supported. 
Option A is incorrect as new EventBridge rules are not required to be created for dropped events.
Option B is incorrect as EventBridge rules can be created for inter-region events, no need to have separate EventBridge rules per region.
Option D is incorrect as FIFO queues are not supported as EventBridge DLQ.
For more information on using EventBridge DLQs with Amazon EventBridge, refer to the following URL,
https://docs.aws.amazon.com/eventbridge/latest/userguide/eb-rule-dlq.html