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How should the solutions architect integrate these components?

A solutions architect is designing an application for a two-step order process. The first step is synchronous and must return to the user with little latency. The second step takes longer, so it will be implemented in a separate component. Orders must be processed exactly once and in the order in which they are received.

How should the solutions architect integrate these components?
A . Use Amazon SQS FIFO queues.
B . Use an AWS Lambda function along with Amazon SQS standard queues.
C . Create an SNS topic and subscribe an Amazon SQS FIFO queue to that topic.
D . Create an SNS topic and subscribe an Amazon SQS Standard queue to that topic.

Answer: A

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