Given the following table:

OUTPUTS= 0,1,2,3,4,5,6

TOTAL COST= 20,29,37,44,50,57,65

Part 1:The TVC of producing 4 units of output is ?

Part 2:The AFC of producing 6 units of output is ?

Part 3:The marginal cost of producing the fifth unit of output is ?

Part 4:The ATC of producing 5 units of output is ?