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QUESTION
Let T be a type S a subtype of T. The Liskov Substitution Principle states that:) an object of type T can be replaced by an object of type S.
Let T be a type & S a subtype of T. The Liskov Substitution Principle states that:
a.) an object of type T can be replaced by an object of type S.
b.) a base class of type T can be replaced by a subclass of type S.
c.) an abstract method can be replaced by an implementation in a subclass
d.) an abstract class of type T can be replaced by an implementation of type.
