 
			 
			MCQOPTIONS
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				| 1. | If the ______ field for mapReduce has the sharded value, MongoDB shards the output collection using the _id field as the shard key. | 
| A. | input | 
| B. | $in | 
| C. | $out | 
| D. | none of the mentioned | 
| Answer» D. none of the mentioned | |