Based on the HTTP message sequence provided, which statements are true about the caching behavior seen in the scenario?

Refer to the exhibit.

An application uses an API to periodically sync a large data set.

Based on the HTTP message sequence provided, which statements are true about the caching behavior seen in the scenario? (Choose two.)
A . The full dataset was transmitted to the client twice.
B . The dataset changed sometime between message #4 and #5.
C . A partial dataset was transmitted to the client in message #4.
D . The dataset did not change during the scenario.
E . Messages #3 and #5 are equivalent.

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Answer: AD