Which of the following is NOT related to the government's political function of income redistribution?

Which of the following is true?

i. Marginal cost is measured by the maximum price that consumers are willing to pay for another unit of a good or service. ii. Producer surplus equals marginal benefit minus price, summed over the quantity produced. iii. A supply curve is a marginal cost curve. A) only iii B) only i C) only ii D) i and ii E) i and iii

If a firm produces 8 units of output with average fixed cost=$40 and average variable cost=$25, what is its total variable cost?

a. $200 b. $320 c. $1,000 d. $650