Write a program that takes a numeric grade (between 0 and 100) and prints out the corresponding letter grade. The intervals are below. ABCDE Α 90 <= grade <=100 В 80 <= grade <90 с 70 <= grade <80 Ꭰ 60 <= grade <70 grade <60 F What are the invalid input values for this program? The program should output an error message if the user enters an invalid grade value. This is a sample output. Enter a grade: 83 The letter grade is B.