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Question

Point out the correct statement.

a.

Applications can use $center without having a geospatial index

b.

Before 3.0, a geospatial index must exist on a field holding coordinates before using any of the geospatial query operators

c.

To use $centerSphere, specify an array that contains grid coordinates of the circle’s center point

d.

None of the mentioned

Posted under MongoDB

Answer: (a).Applications can use $center without having a geospatial index

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Q. Point out the correct statement.

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