Correct answers - "Updating an existing object & Deleting an existing object" : Amazon S3
provides read-after-write consistency for PUTS of new objects in your S3 bucket in all regions
with one caveat. The caveat is that if you make a HEAD or GET request to the key name (to find
if the object exists) before creating the object, Amazon S3 provides eventual consistency for
read-after-write.
Incorrect:
"Creating a new object" - For new objects it uses read-after-write consistency
"Reading an existing object" - Reading an existing object won't change the consistency of that
object. Eventual consistency behaviour is observed when an object is read after it has been
updated, or deleted, but the eventual consistency behaviour comes from the fact that object has
been updated or deleted, not from the read action.