How should class MyObject be defined for the following code to work properly? Assume $array is an array and MyObject is a user-defined class. $obj = new MyObject(); array_walk($array, $obj);

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D. MyObject should implement method __invoke

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A. MyObject should extend class Closure

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B. MyObject should implement interface Callable

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C. MyObject should implement method __call

How should class MyObject be defined for the following code to work properly? Assume $array is an array and MyObject is a user-defined class. $obj = new MyObject(); array_walk($array, $obj);

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