Please explain this question and any related theory to do with it so i am able to understand what is happening, thank you. Please feel free to link any graphs or reference links from websites.

* Identify the regions of increasing, constant, and decreasing returns to scale on the isoquant map shown below. K G 14 F 12 Q = 950 E - - - -- -- 10 Q =900 D 8 Q = 800 6 Q = 500 B 4 Q = 300 2 Q = 200 Q = 100 L 0 1 2 3 4 5 6 7