Which of the following are NOT valid JSON arrays

Question

Which of the following are  NOT   valid JSON arrays

Answer

[ 1, 2, ["dog", "cat", true, false, [1, "dog", null], {"pet":"dog", "fun":true} ]

Answer

[ 1, 2, "dog", "cat", true, false, [1, "dog", null], {} ]

Answer

[ "1", "2", "dog", "cat", "true", "false", ["1", "dog", "null"], {"pet":"dog", "fun":"true"} ]

Answer

[ {1}, {2}, {"dog"}, {"cat"}, {true}, {false}, [1, "dog", null], {"pet":"dog", "fun":true} ]

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