If the ECS S3 API “Put” method is used to create a new object with the same name as an existing object, what is the expected behavior of the S3 operation?

If the ECS S3 API “Put” method is used to create a new object with the same name as an existing object, what is the expected behavior of the S3 operation?
A . Error will be generated
B . Operation will stop
C . Warning will be generated
D . File will be overwritten

Answer: D