Which of the following functionality is used for aggregation framework?
(a) $match
(b) $project
(c) $projectmatch
(d) All of the mentioned
(a) $match
(b) $project
(c) $projectmatch
(d) All of the mentioned
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Right answer is (b) $project
Best explanation: For related projection functionality in the aggregation framework pipeline, use the $project pipeline stage.