the economic question

Complete the following table for producing Beavertails based on the following information regarding the number of workers hired. Number of Workers Marginal Product of Hired Output Cost of Cost of Workers Labour Equipment Hired Total Cost 0 0 100 100 100 20 80 100 140 240 100 60 4 40 100 180 5 300 100 100 b. Does this production information exhibit diminishing marginal product of labour? How would this affect the shape of the marginal-cost curve