At a certain high school students receive letter grades based on the following scale. Numeric Score Letter Grade 93 or above A From 84 to 92 inclusive B с From 75 to 83 inclusive Below 75 F Which of the following code segments will assign the correct string to grade for a given integer score? I. if (score >= 93) grade = "A"; if (score >= 84 && score <= 92) grade = "B"; if (score >= 75 && score <= 83) grade "C"; if (score < 75) grade = ""; II. if (score >= 93) grade = "A"; if (84 <= score <= 92) grade = "B"; if (75 <= score <= 83) grade = "C"; if (score < 75) grade = ""; III. if (score >= 93) grade = "A"; else if (score >= 84) grade = "B"; else if (score >= 75) II. if (score >= 93) grade = "A"; if (84 <= score <= 92) grade = "B"; if (75 <= score <= 83) grade = "C"; if (score < 75) grade ""; III. if (score >= 93) grade = "A"; else if (score >= 84) grade = "B"; else if (score >= 75) grade = "C"; else grade = ""; (A) II only (B) III only (C) I and II only (D) I and III only (E) I, II, and III