题目8单选题
以下代码的输出是什么? Plain Text$arr = ["a" => "apple", "b" => "banana"];$arr["a"] = "avocado";print_r($arr)A. ["a" => "apple", "b" => "banana", "a" => "avocado"]B. Plain Text["a" => "avocado", "b" => "apple"]C. Plain Text["a" => "avocado", "b" => "banana"]D. 错误