Which of the following is the correct JSON structure to subscribe an SQS queue to an SNS topic using AWS SDK?
A{"Protocol": "http", "Endpoint": "arn:aws:sqs:region:account-id:queue-name"}
B{"Protocol": "lambda", "Endpoint": "arn:aws:sqs:region:account-id:queue-name"}
C{"Protocol": "email", "Endpoint": "arn:aws:sqs:region:account-id:queue-name"}
D{"Protocol": "sqs", "Endpoint": "arn:aws:sqs:region:account-id:queue-name"}