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Which AWS configuration is the most cost-effective for a secure, asynchronous application processing credit card validation requests with at least once delivery guarantee?
A
AWS Lambda with SQS standard queues, KMS encryption, and kms:Decrypt permission.
B
AWS Lambda with SQS FIFO queues, SQS-managed encryption, and encryption key invocation permission.
C
AWS Lambda with SQS FIFO queues, KMS encryption, and kms:Decrypt permission.
D
AWS Lambda with SQS standard queues, KMS encryption, and encryption key invocation permission.
