Code Example 5-2 1. # This application displays a student's score after a 5-point curve 2. 3. def display_info(fname, lname, score): 4. print("Hello, ", fname, " ", Lname) 5. print("Your score on this exam is ", score) 6. score = score + 5 7. 8. def main(): 9. first = input("first name: ") 10. last = input("last name: ") 11. grade = input("exam score: ") 12. display_info(first, last, score) 13. 14. # if started as the main module, call the main function 15. if __name__ == "__main__": 16. main() Refer to Code Example 5-2: What is the error on line 6? Group of answer choices There is no error on line 6 The variable score has been input as a string so it must be converted to an int or float. You cannot add a number to itself. You cannot change the value of score after it has been displayed