Which definition of the Toy class adds a valid layer of abstraction to the class hierarchy?

You are asked to develop a program for a shopping application, and you are given the
following information: The application must contain the classes Toy, EduToy, and consToy.
The Toy class is the superclass of the other two classes. The int caicuiatePrice (Toy t)
method calculates the price of a toy. The void printToy (Toy t) method prints the details of a
toy. Which definition of the Toy class adds a valid layer of abstraction to the class
hierarchy?

A.
Option A

B.
Option B

C.
Option C

D.
Option D

Explanation: