Which command gets all documents in a MongoDB datastore where the status equals A or the quantity is less than 30?
db.inventory.find( { status: "a", qty: { $lt: 30 } } )
db.inventory.find( { $or: [ { status: "a" }, { qty: { $lt: 30 } } ] } ) store and query JSON
db.inventory.find( { $or: [ { status: "A" }, { qty: { $lt: 30 } } ] } )
db.inventory.find( { status: "A", qty: { $lt: 30 } } )