113. Table 1.3 shows the hypothetical trade-off between different combinations of brushes and combs that might be produced in a year with the limited capacity for Country X, ceterisparibus. Complete the table by calculating the required opportunity costs for brushes and combs.
On the basis of your calculations in Table 1.3, the lowest opportunity cost for combs in terms of brushes is
A. 10 brushes per comb.
B. 2 brushes per comb.
C. 0.33 brush per comb.
D. 8.5 brushes per comb.