need help with all

8. What is the difference between a list box and a combo box? a A listbox shows all options all the time, a combobox is a dropdown b. A combobox, shows all options all the time, a listbox, is a dropdown c. A combobox does not contain a list of items, a listbox does d. Listboxes do not exist in C# 9. Which of the following is the proper syntax for having a class named Child inherit from a class named Parent? a public class Child extends Parent b. public class Child implements Parent c. public class Child Parent d. public class Child -> Parent 10. What is a virtual method? a. A method that can be overridden but does not have to be overridden b. A method with no definition that must be overridden c. A method that cannot be overridden d. Virtual methods are not supported by C# 11. What is an abstract method? a. A method that can be overridden but does not have to be overridden b. A method with no definition that must be overridden C. A method that cannot be overridden d. Abstract methods are not supported by C# 12. True False. An abstract class cannot be instantiated. True False I