Costs of production that change with the rate of output are
A) sunk costs.
B) opportunity costs.
C) fixed costs.
D) variable costs.
Question 2
Tie-in sales are most advantageous to the seller when
A) the demands for the two goods are negatively correlated.
B) the demands for the two goods are positively correlated.
C) the demands for the two goods are unrelated.
D) there are economies of scope.