ASSIGNAEN ter 11 Menu-Driven Programs Algorithm Workbench 1. Design an algorithm that displays the following menu, gets the user's selection, and validates the selection. Main Menu 1. Open a new document. 2. Close the current document. 3. Print the current document. 4. Exit the program. Enter your selection. 2. Design a case structure that can be used with the algorithm you designed for question 1. The case structure should call a module named openDocument if the user selected item 1, should call a module named closeDocument if the user selected item 2, and should call a module named printDocument if the user selected item 3. 3. Put the algorithms that you designed for questions 1 and 2 together inside a loop that redisplays the menu after the user's selected operation is performed, or exits if the user selects item 4 from the menu. 4. Look for ways to modularize the algorithm that you designed for question 3 and modify it accordingly