D. Decreases in Quadrant ||| , i’m pretty sure
The anwser is the first one you put , -4 is below zero
Only two triangles:
The 90* angle is stable, so you can change only the position of the 50* and 40* angles.
1 triangle: 40* is right to the 90*
2 triangle: 40* is left to the 90*
Hope this helped you!