Question: In the MongoDB Shell, what happens when the following command executes? db . movies.insertOne ( { name: What About Bob?, year: 1 9 9 1

In the MongoDB Shell, what happens when the following command executes?
db.movies.insertOne({ name: "What About Bob?", year: 1991})
The document is not added to the collection without an _id.
The document is added to the collection with a generated _id.
The document is added to the collection with no _id.
The MongoDB shell prompts for an _id before adding the document.
In the MongoDB Shell, what happens when the following command executes?

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