Question
a.
db.records.findOne( { “user_id”: { $lt: 42 } }, { “history”: 0 } )
b.
db.records.find( { “user_id”: { $lt: 42 } }, { “history”: 0 } )
c.
db.records.findOne( { “user_id”: { $lt: 42 } }, { “history”: 1 } )
d.
db.records.select( { “user_id”: { $lt: 42 } }, { “history”: 0 } )
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Q. Which of the following query selects documents in the records collection that match the condition { “user_id”: { $lt: 42 } }?
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