17 Table 2 Quantity Variable Fixed Total of Widgets Costs Costs Costs 0 $10 1 $1 2 $3 $13 3 $6 $16 4 $10 $25 5 $21 $10 6 Refer to Table 2. What is the marginal cost of producing the sixth widget? $1.00 $3.50 O $5.00 $6.00