A.  MongoDB can return sorted results by using the ordering in the index

B.  MongoDB defines indexes at the collection level and supports indexes on any field or sub-field of the documents in a MongoDB collection

C.  Fundamentally, indexes in MongoDB is different to indexes in other database systems

D.  None of the mentioned

Correct Answer :
Fundamentally, indexes in MongoDB is different to indexes in other database systems
Explanation :
No Explanation available for this question
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