Answer: B - The Cloud Act allows communication companies to provide stored data for subscribers of the communication service in response to a warrant. Courts or communication companies may challenge the disclosure of this type of cloud-stored data if the warrant can reasonably be expected to violate the privacy rights of the country in which the data is stored.
The release of stored communications, whether stored on a server or in the cloud, in response to a civil subpoena without the consent of the subscriber, constitutes a violation of the Stored Communication Act.