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Consider the following code snippet :
var book = {
    "main title": "JavaScript", 
    'sub-title': "The Definitive Guide", 
    "for": "all audiences", 
    author: { 
      firstname: "David", 
      surname: "Flanagan" 
    }
  };
In the above snippet, firstname and surname are

A. properties

B. property values

C. property names

D. objects

Answer: Option C

Solution(By Examveda Team)

firstname and surname are the property names. The value of that particular property is itself an object. That is why these property names are unquoted.

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