Another GMAT Prep Problem

[gmat8000]

I thought this could be E as well as D. Please explain why not D.

Which of the following inequalities has a solution set, that when graphed on the number line, is a single line segment of finite length?

a) X^4>=1
b) X^3<=27
c) x^2>=16
d) 2<=lxl<=5
e) 2<=3x+4<=6

[ri2007]

The numbers that fit the inequality 2<=lxl<=5 are

-2, -3, - 4 and -5
2, 3, 4 and 5

the question asks us to find "inequalitie that has a solution a single line segment of finite length"

if we plot the above number on the number line we will have 2 seperate lines not one single line, so choice D is not the answer