Query about Question 3 from "PrepSwift: Making Deductions 2" [4133]

Link: https://prepswift.gregmat.com/quizzes/quiz/prepswift-making-deductions-2 (Question 3)


The last option choice says for n>4, but it is also true for n=4/3. Why did we not eliminate here

which isn’t relevant to the option? Also 4/3 is not an integer.