How are TC, FC, and VC related to each other and to output? How are ATC, AFC, and AVC related to each other and to output? (What shape are these curves and why?) Why is the MC curve shaped the way it...

How are TC, FC, and VC related to each other and to output? How are ATC, AFC, and AVC related to each other and to output? (What shape are these curves and why?) Why is the MC curve shaped the way it is? At which unit of output does diminishing returns set in? What is the relationship between ATC, AVC, and MC?