If an App Needs to Perform a Derived-Class-Specific Operation on a Derived

question 34

Multiple Choice

If an app needs to perform a derived-class-specific operation on a derived class object reference by a base class variable,the app must first cast the base class reference to a derived class reference through a technique known as _________.

• A) downcasting
• B) upcasting
• C) decreasecasting
• D) increasecasting

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