Which of the following descriptions about Elastic Cloud Server (ECS) is wrong?

Which of the following descriptions about Elastic Cloud Server (ECS) is wrong?
A . Provides multiple types of elastic cloud servers to meet different usage scenarios. Each type of elastic cloud server includes multiple specifications and supports specification changes.
B . Supports purchasing cloud servers in annual/monthly, on-demand, and competitive bidding modes to meet different application scenarios
C . Automatically adjust elastic computing resources according to business needs and strategies to efficiently match business requirements
D . Based on the Dynaudio architecture, cloud servers have no virtualization overhead and performance loss, and 100% of computing resources are released

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Answer: D