If a firm has FC = $500, and TC = $1000 when output is 25 units. How much is the AVC per unit of output of 25 units of output? O a. $30 O b. $20 O c. $25 O d. $15 Suppose the supply function for sushi in Portland is given by P = 100 - Q + X - Y where P=price, Q=quantity, and X and Y are other factors that may affect supply. Which of the following are true? (Select all that apply.) O a. X could be the wage rate for sushi chefs O b. Y could be a tax ) c. Y could be the consumer's income O d. Y could be the price of ramen (something a sushi restaurant could produce instead of sushi) D e. X could be the price of rice (an input)