please answer

QUESTION 38 The total cost of producing one unit is $50. The total cost of producing two units is $75. At a production level of two units, the cost function exhibits O economies of scale rising average costs increasing marginal costs constant returns to scale QUESTION 39 b in any production process the marginal product of labor equals Change in total output divided by change in labor input O Total output divided by total input Total output None of these statements are true QUESTION 44 If the intal output of cupcakes at Herman's bakery increases from 20 per hour to 30 per hour as he hires the second worker, then the marginal product of the second worker is 20 candles the marginal product of the second worker is jo candies If the price of each candle is $4, the marginal revenue product (MRP] of the second worker is sad if the price of each candis is $4 the marginal revenue product (MRP] of the second weaker is $40