Which of these definitions describe a data stream as it relates to Google Analytics?

Question

Accepted Answer

A data stream lives within a property and is a source of data from your app or website

Answer

A data stream lives within an account and is the container for the data you collect from your apps and sites

Answer

A data stream lives within Explore and, once defined, can be added to any exploration

Answer

A data stream lives within Reports and lets you segment and compare your data