Question: What is NullPointerException? B - A NullPointerException is thrown when object is set as null. A - A NullPointerException is thrown when calling the instance

What is NullPointerException?
B - A NullPointerException is thrown when object is set as null.
A - A NullPointerException is thrown when calling the instance method of a null object or modifying/accessing field of a null object.
C - A NullPointerException is thrown when object property is set as null.
D - None of the above.

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