108. 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 law of increasing opportunity costs applies to
A. Both brushes and combs.
B. Combs but not brushes.
C. Brushes but not combs.
D. Neither brushes nor combs.