I am using Mongo CSharpDriver-2.0.0 version and IMongoCollection Async in my application. My data collection looks as shown in the figure attached(2.png).
Here I want to perform a Search operation on Venue Details, basically we will give a pair of Latitude and Longitude and it should return a list of Records that are with in the distance of 4000 meters from provided Latitude and Longitude.
To implement above functionality I am using the below code: This code works fine when I pass a single category.

IMongoCollection<BusinessDeal> BusinessCollection;
BusinessCollection = _database.GetCollection<BusinessDeal>("BusinessDeals2");

double? rangeInMeters = null;
if (rangeInMeters == null)

{ rangeInMeters = 3000; }

//add index for venue.location and category
var keyBuilder = Builders<BusinessDeal>.IndexKeys;
keyBuilder.Geo2DSphere(x => x.Venuedetails.Select(y => y.Location)).Ascending(x => x.Categories.Select(y => y.Id));
keyBuilder.Geo2DSphere(x => x.Venuedetails.Select(y => y.Location)).Ascending(x => x.Accessgroups.Select(y => y.Id));

BsonDocument geoPoint = new BsonDocument
{

{"type","Point"}

,
{"coordinates",new BsonArray(new double[]{-84.289156, 34.289156})}
};

BsonDocument geoNearOptions = new BsonDocument
{

{"spherical", true}

,

{"limit", 300}

,should we do a filter first?

{"maxDistance", rangeInMeters}

,

{"near",geoPoint}

,

{"distanceField","dist"}

};

var stage = new BsonDocumentPipelineStageDefinition<BusinessDeal, BusinessDeal>(new BsonDocument {

{ "$geoNear", geoNearOptions }

});

var colAggregate = BusinessCollection.Aggregate().AppendStage(stage);
var result = BusinessCollection.Aggregate().ToListAsync();
_businessDealsList = result.Result;

The above code is returning all the records that are in the Collection. But there are only 2 records that are 4000 meters of distance. My records are as follows:
Latitude1 Longitude1 Latitude2 Longitude2 Distance from Origin in Meters
Record1 -84.289156 34.289156 -84.288357 34.068686 2414.016
Record2 -84.289156 34.289156 -84.299477 34.069886 2735.8848
Record3 -84.289156 34.289156 -84.299477 34.690986 4667.0976

When I run or Debug the code, it returns all the three records. But it should return only 2 records. Please review the code that I have written and help where I am going wrong. Thanks in advance for your help and support.