4. Write a Python program that asks the user to enter the initial balance. Validate that the balance entered is a non-negative number. Once you have a valid balance, print it. Assume the interest rate is 5%. Use a Python for loop to calculate and print the balance at the end of each year. Stop after ten years. Submit screen shots of your program code and the output. Your output screen shot should show what happens when you enter an invalid balance and show what happens when you enter a valid balance