Answer:
B: the firm's income will remain unchanged whether it sell tortillas or taco shells
Explanation:
The firm's income will still be the same because additional cost are incurred when producing the taco shells see below for calculation
When the firm processes tortillas: it makes a revenue of $22,500 and a cost of $8,000 realizing a profit of $14,500.
When the firm decides to fry the tortillas to make hard taco shells: it makes a revenue of $26,700 and total cost of $12,200 ($8,000+$4,200) then realizing a profit of $14,500.
Thus, the reason the profit won't change is because the firm incurred additional cost in processing the taco shells.