<Li> null: An empty value, using the word null </Li> <P> Limited whitespace is allowed and ignored around or between syntactic elements (values and punctuation, but not within a string value). Only four specific characters are considered whitespace for this purpose: space, horizontal tab, line feed, and carriage return . In particular, the byte order mark must not be generated by a conforming implementation (though it may be accepted when parsing JSON). JSON does not provide syntax for comments . </P> <P> Early versions of JSON (such as specified by RFC 4627) required that a valid JSON "document" must consist of only an object or an array type, which could contain other types within them . </P> <P> The following example shows a possible JSON representation describing a person . </P>

What is/ are correct statements about json