In: Economics
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 (Table 7.1) Which of the following is correct at 4 units of output? 
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 please explain how you arrived at your final answer, thank you!  | 
Using the formulas above the
table is completed as below
| Q | FC | VC | TC | AFC | AVC | ATC | 
| 0 | 70 | 0 | 70 | |||
| 1 | 70 | 40 | 110 | 70 | 40 | 110 | 
| 2 | 70 | 70 | 140 | 35 | 35 | 70 | 
| 3 | 70 | 120 | 190 | 23.33333 | 40 | 63.33333 | 
| 4 | 70 | 210 | 280 | 17.5 | 52.5 | 70 | 
| 5 | 70 | 330 | 400 | 14 | 66 | 80 | 
From the table it is evident that at Q=4 , AFC = 17.50; AVC = 52.50; ATC = 70. Therefpre, the correct option is