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Q36 Single choice

A company is running an application that uses an Amazon ElastiCache for Redis cluster as a caching layer. A recent security audit revealed that the company has configured encryption at rest for ElastiCache. However, the company did not configure ElastiCache to use encryption in transit. Additionally, users can access the cache without authentication.

A solutions architect must make changes to require user authentication and to ensure that the company is using end-to-end encryption.
Which solution will meet these requirements?

A
Create an AUTH token. Store the token in AWS System Manager Parameter Store, as an encrypted parameter. Create a new cluster with AUTH, and configure encryption in transit. Update the application to retrieve the AUTH token from Parameter Store when necessary and to use the AUTH token for authentication.
B
Create an AUTH token. Store the token in AWS Secrets Manager. Configure the existing cluster to use the AUTH token, and configure encryption in transit. Update the application to retrieve the AUTH token from Secrets Manager when necessary and to use the AUTH token for authentication.
C
Create an SSL certificate. Store the certificate in AWS Secrets Manager. Create a new cluster, and configure encryption in transit. Update the application to retrieve the SSL certificate from Secrets Manager when necessary and to use the certificate for authentication.
D
Create an SSL certificate. Store the certificate in AWS Systems Manager Parameter Store, as an encrypted advanced parameter. Update the existing cluster to configure encryption in transit. Update the application to retrieve the SSL certificate from Parameter Store when necessary and to use the certificate for authentication.

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