A company has attached the following policy to an IAM user.

Which of the following actions are allowed for the IAM user?

A. Amazon RDS DescribeDBInstances action in the us-east-1 Region
B. Amazon S3 PutObject operation in a bucket named testbucket
C. Amazon EC2 DescribeInstancesaction in the us-east-1 Region
D. Amazon EC2 AttachNetworkInterfaceaction in the eu-west-1 Region