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A gaming application stores scores for players in an Amazon DynamoDB table that has four...

A gaming application stores scores for players in an Amazon DynamoDB table that has four attributes: user_id, user_name, user_score, and user_rank. The users are allowed to update their names only. A user is authenticated by web identity federation.

Which set of conditions should be added in the policy attached to the role for the dynamodb:PutItem API call?

A.

"Condition": {

"ForAllValues:StringEquals": {

"dynamodb:LeadingKeys": ["${www.amazon.com:user_id}"],

"dynamodb:Attributes": ["user_name"]

}

}

B.

"Condition": {

"ForAllValues:StringEquals": {

"dynamodb:LeadingKeys": ["${www.amazon.com:user_name}"],

"dynamodb:Attributes": ["user_id"]

}

}

C.

"Condition": {

"ForAllValues:StringEquals": {

"dynamodb:LeadingKeys": ["${www.amazon.com:user_id}"],

"dynamodb:Attributes": ["user_name", "user_id"]

}

}

D.

"Condition": {

"ForAllValues:StringEquals": {

"dynamodb:LeadingKeys": ["${www.amazon.com:user_name}"],

"dynamodb:Attributes": ["username", "userid"]

}

}

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