Programming Exercise 5-3 Enter UppercaseLette... + Instructions + > Terminal Write an application named Enter UppercaseLetters that asks the user to type an uppercase letter from the keyboard. If the character entered is an uppercase letter, display: OK; if it is not an uppercase letter, display the error message: Sorry - that was not an uppercase letter. . The program continues until the user types an exclamation point (!). 1 using System; 2 using static system.Console; 3 class EnteruppercaseLetters 4 { 5 static void Main() 6 { 7 // write your main here. 8 } 10 An example of the program is shown below: Enter an uppercase letter >> T OK Enter an uppercase letter or ! to quit t Sorry - that was not an uppercase letter. Enter an uppercase letter or ! to quit ! Grading When you have completed your program, click the Submit button to record your score