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An ecommerce application utilizes Amazon API Gateway and AWS Lambda. What is the recommended approach for testing the application in a separate, monitored environment before production deployment?
A
Implement a single API Gateway stage with distinct Lambda functions for each environment, using query parameters to select the appropriate function.
B
Utilize multiple API Gateway stages, employing one Lambda function across all environments, differentiated by environment variables within the Lambda code.
C
Adopt multiple API Gateway stages, with a unique Lambda function for each environment, leveraging stage variables to direct traffic to the correct Lambda function.
D
Employ a single API Gateway stage, directing environment-specific traffic through query parameters, with the Lambda function containing conditional code blocks based on the environment indicated by the parameter.
