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In a serverless healthcare application, how should temporary data written to /tmp storage on an AWS Lambda function be encrypted?
A
By enabling Amazon EBS volume encryption with an AWS KMS key in the Lambda configuration.
B
By setting up the Lambda with a role and key policy for AWS KMS key access to generate data keys for encryption.
C
By generating a symmetric encryption key using OpenSSL on Lambda startup for data encryption before writing to /tmp.
D
By using an on-premises HSM to generate keys, requesting a data key from the HSM for encrypting data on Lambda function requests.
