Elance Exams Answers PDF file

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In MongoDB's Geospatial Indexing, if you want to create & use index on EARTH, what is NOT TRUE?

Creating a "2d" index first.
Adding spherical : true inside geoNear query.
Indexing documents by multiple locations is possible in recent versions.
Using decimal degrees in (longitude, latitude) order.
Specifying in key like { lat : -50, lon : 13 }
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