Which of the following application scenarios are suitable for Auto Scaling?

Auto Scaling is a management service that can automatically adjust elastic computing resources based on your business needs and policies.

Which of the following application scenarios are suitable for Auto Scaling? (Choose three.)
A . You need to flexibly adjust elastic computing resources based on your business needs, and ECS instances will be added seamlessly to address traffic peaks and surges.
B. You need to flexibly adjust elastic computing resources based on your business needs, and ECS instances will be reduced automatically to save costs when business needs drop.
C. When an ECS instance reacts abnormally in a scaling group, Auto Scaling will create a new ECS instance to take over the computing tasks conducted by the faulty instance.
D. You want to flexibly adjust elastic computing resources based on your business needs, and ECS instances will be automatically upgraded (with more Memory, more powerful CPU) when needed.

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Answer: A,B,C