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How can a developer securely provide an API key to an AWS Lambda function for third-party authentication while ensuring the key is encrypted at rest?
A
Using an AWS KMS customer managed key to encrypt the API key stored as a Lambda environment variable.
B
Prompting the user to input the password for the Lambda function during the initial run.
C
Embedding the API key directly within the application code.
D
Utilizing Lambda@Edge and ensuring all communications are secured via HTTPS.