You are building an online store on AWS that uses SQS to process your customer orders. Your backend system needs
those messages in the same sequence the customer orders have been put in. How can you achieve that?

A.
It is not possible to do this with SQS

B.
You can use sequencing information on each message

C.
You can do this with SQS but you also need to use SWF

D.
Messages will arrive in the same order by default

Explanation:
Amazon SQS makes a best effort to preserve order in messages, but due to the distributed nature of the queue, we
cannot guarantee that you will receive messages in the exact order you sent them. You typically place sequencing
information or timestamps in your messages so that you can reorder them upon receipt.