Question 1 (9 points): Purpose: Practice with conditionals; practice with variables and good program design. Degree of Difficulty: Moderate For this problem, you will write a program that will allow a user to calculate a letter-based grade, based on a grade percentage. Here is a description of how your program should look and behave: – Initially, display the text “Grade Calculator” and “Average:” on the canvas. – When the user presses a key, show the keys pressed beside “Average:” – When the use