A Company Delivers Files in Amazon S3 to Certain Users

A company delivers files in Amazon S3 to certain users who do not have AWS credentials. These users must be given access for a limited time. What should a solutions architect do to securely meet these requirements?

A) Enable public access on an Amazon S3 bucket.
B) Generate a presigned URL to share with the users.
C) Encrypt files using AWS KMS and provide keys to the users.
D) Create and assign IAM roles that will grant GetObject permissions to the users.

Correct Answer:

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