Each day, tasty tortilla company incurs total costs of $8,000 to process flour into tortillas. the company can then sell the tortillas as is for total daily revenue of $22,500. alternatively, tasty can fold and fry the tortillas to make hard taco shells. the additional costs for making the taco shells are $4,200 per day, and the total daily revenues from the finished shells are $26,700. given these figures,

a : the firm will make an additional $8,000 in income per day if it sells tortillas instead of taco shells.

b : the firm’s income will remain unchanged whether it sells tortillas or taco shells.

c : the firm will make an additional $4,200 in income per day if it sells taco shells instead of tortillas.

d : the firm will make an additional $14,500 in income per day if it sells taco shells instead of tortillas.