Which code segment should you insert at line 20?

You are developing an application. The application converts a Location object to a string by using a method named WriteObject. The WriteObject() method accepts two parameters, a Location object and an XmlObjectSerializer object.

The application includes the following code. (Line numbers are included for reference only.)

You need to serialize the Location object as a JSON object.

Which code segment should you insert at line 20?
A . New DataContractSerializer(typeof(Location))
B . New XmlSerializer(typeof(Location))
C . New NetDataContractSenalizer()
D . New DataContractJsonSerializer(typeof(Location))

Answer: D

Explanation:

The code is using [DataContract] attribute here so need to use DataContractSerializer class.

The DataContractJsonSerializer class serializes objects to the JavaScript Object Notation (JSON) and deserializes JSON data to objects.

Use the DataContractJsonSerializer class to serialize instances of a type into a JSON document and to deserialize a JSON document into an instance of a type.