Use this 3 following steps:
1)At first, we should find the roots :
3x+8=0 => x=-8/3
x-4=0 => x=4
2)Using a chart for the limits:
photo
3)choose your solution:
[-8/3,-4)==> Sentence 3 is correct
Across the large angle is going to be large side, then AB is going to be larger than DF.
A= 1
B= -5
C= 10
In order to figure it out, you can think about it like this..