Which of the below code would assign the appropriate letter grade based on a numeric score? (1 point) if(score>=90) grade = "A"; else if(score>=80 && score < 90) grade = "B"; else if(score>=70 && score < 80) grade = "C"; else if(score>=60 && score < 70) grade = "D"; else if(score<60) grade = "F"; if(score<59) grade = "F"; else if(score<80) grade = "C"; else if(score<70) grade = "D"; else if(score<90) grade = "B"; else grade = "A"; if(score>89) grade = "A"; else if(score>79) grade = "B"; else if(score>69) grade = "C"; else if(score>59 grade = "D"; else grade = "F"; I only II only III only I and II only I and III only