On a newly created collection, which field will have an index? Options: A . &nbspthe name field B . &nbspthe ObjectId field C . &nbspthe _id field D . &nbspno field will have an index

On a newly created collection, which field will have an index?

Question

On a newly created collection, which field will have an index?

Options:

A . the name field

B . the ObjectId field

C . the _id field

D . no field will have an index

Answer: Option C

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