Which one of the following function should I use to find the parent class of a class?

A get_parent_class()
B parent_class()
C class_parent()
D get_class_parent()

Correct Answer: get_parent_class()

The class functions also allow us to chart inheritance relationships.This function requires either an object or a class name, and it returns the name of the superclass, if any. If no such class exists, that is, if the class we are testing does not have a parent, then the function returns false.
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