Which of the following is a good reason for creating methods within a program?   a. The Main() method becomes more detailed.     b. Methods are easily reusable.     c. All of these are true.     d. Because all methods must be stored in the same class, they are easy to find.

write a class book, which has 3 attributes: title, price, quantity. Write the following methods, (8 points) a. setter/getter methods for each of the 3 attributes. b. __str__ method to display the complete information for the book, including title, price and quantity c. Method sell_copies(), passing the number of copies sold, which will reducethe value of quantity of the book. write the code in python please and thank you

Determine the difference between a constructor and a method.

a. Plan the logic for an insurance company program to determine policy premiums. The program continuously prompts the user for an insurance policy number. When the user enters an appropriate sentinel value, end the program. Call a method that prompts each user for the type of policy needed—health or auto. While the user’s response does not indicate health or auto, continue to prompt the user. When the value is valid, return it from the method. Pass the user’s response to a new method where the premium is set and returned—$550 for a health policy or $225 for an auto policy. Display the results for each policy. b.Modify Exercise 9a so that the premium-setting method calls one of two additional methods—one that determines the health premium or one that determines the auto premium. The health insurance method asks users whether they smoke; the premium is $550 for smokers and $345 for nonsmokers. The auto insurance method asks users to enter the number of traffic tickets they have received…