The ____ value specifies the rate of change between tweened frames.

After multiple objects have been inserted on a slide, the last inserted object is at the bottom of the stack

Indicate whether the statement is true or false

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