The concept of composition specifies that you can.
                                
A. Compose good code with C#
B. Compose C# projects with different objects
C. Reduce errors by remaining composed during programming
D. all of the above
                              
Click To Show Ans: b
                        

                                

Polymorphism occurs when the methods of the child class.
                                
A. Override the parent class methods but maintain the implementation
B. Maintain the same return type and arguments as the parent class, but implement it differently
C. Have different return types and arguments than the parent class
D. Are Virtual
                              
Click To Show Ans: b
                        

                                

To output the value of multidimensional array, Console.WriteLines(___)
                                
A. myArray[1][3];
B. myArray[1.3];
C. myArray{1}{3};
D. myArray(1),(3);
                              
Click To Show Ans: a
                        

                                

All methods in an abstract base class must be declared abstract.
                                
A. True
B. False
                              
Click To Show Ans: b
                        

                                

Methods that are declared abstract in the base class must show implementation at the time of declaration.
                                
A. True
B. False
                              
Click To Show Ans: b