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Question

Point out the wrong statement.

a.

{ $meta: “textScore” } expression is only meaningful in a pipeline that includes a $match stage with a $text query

b.

The { $meta: “textScore” } expression is the only expression that the $sort stage accepts

c.

$toLower only has a well-defined behavior for strings of ASCII characters

d.

None of the mentioned

Posted under Aggregation Concepts and Aggregation Mechanics MongoDB

Answer: (d).None of the mentioned

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