If there are only four positive integer solutions to the inequality 2x-a ≤ 0, the value range of a is obtained

If there are only four positive integer solutions to the inequality 2x-a ≤ 0, the value range of a is obtained

X ≤ A / 2 is obtained from 2x-a ≤ 0
This inequality has only four positive integers, so these four positive integers are 1, 2, 3 and 4
So 4 ≤ A / 2