A Root Account Owner Has Created an S3 Bucket Testmycloud

Multiple Choice

A root account owner has created an S3 bucket testmycloud. The account owner wants to allow everyone to upload the objects as well as enforce that the person who uploaded the object should manage the permission of those objects. Which is the easiest way to achieve this?

A) The root account owner should create a bucket policy which allows the IAM users to upload the object
B) The root account owner should create the bucket policy which allows the other account owners to set the object policy of that bucket
C) The root account should use ACL with the bucket to allow everyone to upload the object
D) The root account should create the IAM users and provide them the permission to upload content to the bucket