Table 13 Shows the Hypothetical Trade-Off Between Different Combinations of Brushes

Multiple Choice

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,ceteris paribus.Complete the table by calculating the required opportunity costs for brushes and combs.
- On the basis of your calculations in Table 1.3,in the production range of 21 to 23 brushes the opportunity cost of producing more comb in terms of brushes is

A) 1/21.
B) 21/23.
C) 1/2.
D) 4.